76865656804 has 6 divisors (see below), whose sum is σ = 134514899414. Its totient is φ = 38432828400.

The previous prime is 76865656801. The next prime is 76865656841. The reversal of 76865656804 is 40865656867.

It can be written as a sum of positive squares in only one way, i.e., 63603831204 + 13261825600 = 252198^2 + 115160^2 .

It is a super-2 number, since 2×76865656804² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76865656801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9608207097 + ... + 9608207104.

Almost surely, 2^76865656804 is an apocalyptic number.

It is an amenable number.

76865656804 is a deficient number, since it is larger than the sum of its proper divisors (57649242610).

76865656804 is a wasteful number, since it uses less digits than its factorization.

76865656804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19216414205 (or 19216414203 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 61.

The spelling of 76865656804 in words is "seventy-six billion, eight hundred sixty-five million, six hundred fifty-six thousand, eight hundred four".