977615091872 has 24 divisors (see below), whose sum is σ = 2025978645600. Its totient is φ = 463080832704.

The previous prime is 977615091811. The next prime is 977615091881. The reversal of 977615091872 is 278190516779.

It is a happy number.

977615091872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 803959172 + ... + 803960387.

It is an arithmetic number, because the mean of its divisors is an integer number (84415776900).

Almost surely, 2^977615091872 is an apocalyptic number.

It is an amenable number.

977615091872 is an abundant number, since it is smaller than the sum of its proper divisors (1048363553728).

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

977615091872 is a wasteful number, since it uses less digits than its factorization.

977615091872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607919588 (or 1607919580 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 62.

The spelling of 977615091872 in words is "nine hundred seventy-seven billion, six hundred fifteen million, ninety-one thousand, eight hundred seventy-two".