76540865864 has 16 divisors (see below), whose sum is σ = 143523014400. Its totient is φ = 38268062032.

The previous prime is 76540865851. The next prime is 76540865879. The reversal of 76540865864 is 46856804567.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155204 + ... + 420915.

It is an arithmetic number, because the mean of its divisors is an integer number (8970188400).

Almost surely, 2^76540865864 is an apocalyptic number.

It is an amenable number.

76540865864 is a deficient number, since it is larger than the sum of its proper divisors (66982148536).

76540865864 is a wasteful number, since it uses less digits than its factorization.

76540865864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592732 (or 592728 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 59.

The spelling of 76540865864 in words is "seventy-six billion, five hundred forty million, eight hundred sixty-five thousand, eight hundred sixty-four".