76977692945 has 48 divisors (see below), whose sum is σ = 105702330240. Its totient is φ = 53526832128.

The previous prime is 76977692933. The next prime is 76977692951. The reversal of 76977692945 is 54929677967.

It is not a de Polignac number, because 76977692945 - 2¹⁴ = 76977676561 is a prime.

It is a super-2 number, since 2×76977692945² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1620746 + ... + 1667564.

It is an arithmetic number, because the mean of its divisors is an integer number (2202131880).

Almost surely, 2^76977692945 is an apocalyptic number.

It is an amenable number.

76977692945 is a deficient number, since it is larger than the sum of its proper divisors (28724637295).

76977692945 is a wasteful number, since it uses less digits than its factorization.

76977692945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46922 (or 46893 counting only the distinct ones).

The product of its digits is 360067680, while the sum is 71.

The spelling of 76977692945 in words is "seventy-six billion, nine hundred seventy-seven million, six hundred ninety-two thousand, nine hundred forty-five".