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68504827140 = 22335271468121
BaseRepresentation
bin111111110011001101…
…001011010100000100
320112211012220210022000
4333303031023110010
52110244213432030
651245400105300
74643420265051
oct776315132404
9215735823260
1068504827140
1127064209622
121133a165230
1365c9755599
14345c20c028
151bae21b860
hexff334b504

68504827140 has 96 divisors (see below), whose sum is σ = 213913029120. Its totient is φ = 18200505600.

The previous prime is 68504827117. The next prime is 68504827159. The reversal of 68504827140 is 4172840586.

68504827140 is a `hidden beast` number, since 68 + 5 + 0 + 482 + 71 + 40 = 666.

It is a super-2 number, since 2×685048271402 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87721 + ... + 380400.

It is an arithmetic number, because the mean of its divisors is an integer number (2228260720).

Almost surely, 268504827140 is an apocalyptic number.

68504827140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68504827140 is an abundant number, since it is smaller than the sum of its proper divisors (145408201980).

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

68504827140 is a wasteful number, since it uses less digits than its factorization.

68504827140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468410 (or 468402 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 68504827140 in words is "sixty-eight billion, five hundred four million, eight hundred twenty-seven thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 271 540 542 813 1084 1355 1626 2439 2710 3252 4065 4878 5420 7317 8130 9756 12195 14634 16260 24390 29268 36585 48780 73170 146340 468121 936242 1404363 1872484 2340605 2808726 4213089 4681210 5617452 7021815 8426178 9362420 12639267 14043630 16852356 21065445 25278534 28087260 42130890 50557068 63196335 84261780 126392670 126860791 252785340 253721582 380582373 507443164 634303955 761164746 1141747119 1268607910 1522329492 1902911865 2283494238 2537215820 3425241357 3805823730 4566988476 5708735595 6850482714 7611647460 11417471190 13700965428 17126206785 22834942380 34252413570 68504827140