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64353796080 = 24357151253681
BaseRepresentation
bin111011111011110010…
…001111111111110000
320011002221000120011220
4323323302033333300
52023244032433310
645321433105040
74435514145510
oct737362177760
9204087016156
1064353796080
1125324049542
121057bb58180
1360b77638a2
143186bc1840
151a19ab1670
hexefbc8fff0

64353796080 has 160 divisors (see below), whose sum is σ = 229507120128. Its totient is φ = 14611968000.

The previous prime is 64353796069. The next prime is 64353796097. The reversal of 64353796080 is 8069735346.

It is a super-2 number, since 2×643537960802 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126840 + ... + 380520.

Almost surely, 264353796080 is an apocalyptic number.

64353796080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is a pronic number, being equal to 253680×253681.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64353796080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114753560064).

64353796080 is an abundant number, since it is smaller than the sum of its proper divisors (165153324048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64353796080 is a wasteful number, since it uses less digits than its factorization.

64353796080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253855 (or 253849 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 64353796080 in words is "sixty-four billion, three hundred fifty-three million, seven hundred ninety-six thousand, eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 151 168 210 240 280 302 336 420 453 560 604 755 840 906 1057 1208 1510 1680 1812 2114 2265 2416 3020 3171 3624 4228 4530 5285 6040 6342 7248 8456 9060 10570 12080 12684 15855 16912 18120 21140 25368 31710 36240 42280 50736 63420 84560 126840 253680 253681 507362 761043 1014724 1268405 1522086 1775767 2029448 2536810 3044172 3551534 3805215 4058896 5073620 5327301 6088344 7103068 7610430 8878835 10147240 10654602 12176688 14206136 15220860 17757670 20294480 21309204 26636505 28412272 30441720 35515340 38305831 42618408 53273010 60883440 71030680 76611662 85236816 106546020 114917493 142061360 153223324 191529155 213092040 229834986 268140817 306446648 383058310 426184080 459669972 536281634 574587465 612893296 766116620 804422451 919339944 1072563268 1149174930 1340704085 1532233240 1608844902 1838679888 2145126536 2298349860 2681408170 3064466480 3217689804 4022112255 4290253072 4596699720 5362816340 6435379608 8044224510 9193399440 10725632680 12870759216 16088449020 21451265360 32176898040 64353796080