78687955584 has 96 divisors (see below), whose sum is σ = 258780356640. Its totient is φ = 22482270720.

The previous prime is 78687955559. The next prime is 78687955601. The reversal of 78687955584 is 48555978687.

78687955584 is a `hidden beast` number, since 7 + 8 + 68 + 7 + 9 + 5 + 558 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4870902 + ... + 4887029.

It is an arithmetic number, because the mean of its divisors is an integer number (2695628715).

Almost surely, 2^78687955584 is an apocalyptic number.

It is an amenable number.

78687955584 is an abundant number, since it is smaller than the sum of its proper divisors (180092401056).

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

78687955584 is a wasteful number, since it uses less digits than its factorization.

78687955584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9757958 (or 9757943 counting only the distinct ones).

The product of its digits is 677376000, while the sum is 72.

The spelling of 78687955584 in words is "seventy-eight billion, six hundred eighty-seven million, nine hundred fifty-five thousand, five hundred eighty-four".