977645958772 has 24 divisors (see below), whose sum is σ = 2018365852160. Its totient is φ = 405475282080.

The previous prime is 977645958769. The next prime is 977645958781. The reversal of 977645958772 is 277859546779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563159247 + ... + 563160982.

Almost surely, 2^977645958772 is an apocalyptic number.

It is an amenable number.

977645958772 is an abundant number, since it is smaller than the sum of its proper divisors (1040719893388).

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

977645958772 is a wasteful number, since it uses less digits than its factorization.

977645958772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126320271 (or 1126320269 counting only the distinct ones).

The product of its digits is 1867017600, while the sum is 76.

The spelling of 977645958772 in words is "nine hundred seventy-seven billion, six hundred forty-five million, nine hundred fifty-eight thousand, seven hundred seventy-two".