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64115801076 = 223131137463643
BaseRepresentation
bin111011101101100110…
…010111101111110100
320010111100012011102010
4323231212113233310
52022302121113301
645242052044220
74426564213515
oct735546275764
9203440164363
1064115801076
1125211775358
1210514303670
13607a365542
14316334ca0c
151a03c4e5d6
hexeed997bf4

64115801076 has 96 divisors (see below), whose sum is σ = 152410503168. Its totient is φ = 20975834880.

The previous prime is 64115801027. The next prime is 64115801077. The reversal of 64115801076 is 67010851146.

It is a super-2 number, since 2×641158010762 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64115801077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99713211 + ... + 99713853.

It is an arithmetic number, because the mean of its divisors is an integer number (1587609408).

Almost surely, 264115801076 is an apocalyptic number.

It is an amenable number.

64115801076 is an abundant number, since it is smaller than the sum of its proper divisors (88294702092).

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

64115801076 is a wasteful number, since it uses less digits than its factorization.

64115801076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 64115801076 in words is "sixty-four billion, one hundred fifteen million, eight hundred one thousand, seventy-six".

Divisors: 1 2 3 4 6 12 131 137 262 274 393 411 463 524 548 643 786 822 926 1286 1389 1572 1644 1852 1929 2572 2778 3858 5556 7716 17947 35894 53841 60653 63431 71788 84233 88091 107682 121306 126862 168466 176182 181959 190293 215364 242612 252699 253724 264273 297709 336932 352364 363918 380586 505398 528546 595418 727836 761172 893127 1010796 1057092 1190836 1786254 3572508 8309461 11539921 16618922 23079842 24928383 33237844 34619763 38999879 40786133 46159684 49856766 69239526 77999758 81572266 99713532 116999637 122358399 138479052 155999516 163144532 233999274 244716798 467998548 489433596 5342983423 10685966846 16028950269 21371933692 32057900538 64115801076