77967676976 has 20 divisors (see below), whose sum is σ = 172642713552. Its totient is φ = 33414718656.

The previous prime is 77967676967. The next prime is 77967676987. The reversal of 77967676976 is 67967676977.

It is a junction number, because it is equal to n+sod(n) for n = 77967676897 and 77967676906.

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, 348069875 + ... + 348070098.

Almost surely, 2^77967676976 is an apocalyptic number.

It is an amenable number.

77967676976 is an abundant number, since it is smaller than the sum of its proper divisors (94675036576).

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

77967676976 is a wasteful number, since it uses less digits than its factorization.

77967676976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696139988 (or 696139982 counting only the distinct ones).

The product of its digits is 1764331632, while the sum is 77.

Subtracting from 77967676976 its reverse (67967676977), we obtain a palindrome (9999999999).

The spelling of 77967676976 in words is "seventy-seven billion, nine hundred sixty-seven million, six hundred seventy-six thousand, nine hundred seventy-six".