77897096880 has 80 divisors (see below), whose sum is σ = 246618929664. Its totient is φ = 20330586880.

The previous prime is 77897096863. The next prime is 77897096897. The reversal of 77897096880 is 8869079877.

It is an interprime number because it is at equal distance from previous prime (77897096863) and next prime (77897096897).

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3441606 + ... + 3464165.

Almost surely, 2^77897096880 is an apocalyptic number.

It is an amenable number.

77897096880 is an abundant number, since it is smaller than the sum of its proper divisors (168721832784).

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

77897096880 is a wasteful number, since it uses less digits than its factorization.

77897096880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6905834 (or 6905828 counting only the distinct ones).

The product of its (nonzero) digits is 85349376, while the sum is 69.

The spelling of 77897096880 in words is "seventy-seven billion, eight hundred ninety-seven million, ninety-six thousand, eight hundred eighty".