977863197808 has 30 divisors (see below), whose sum is σ = 2203934020296. Its totient is φ = 419084227296.

The previous prime is 977863197799. The next prime is 977863197821. The reversal of 977863197808 is 808791368779.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623636460 + ... + 623638027.

Almost surely, 2^977863197808 is an apocalyptic number.

977863197808 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

977863197808 is an abundant number, since it is smaller than the sum of its proper divisors (1226070822488).

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

977863197808 is a wasteful number, since it uses less digits than its factorization.

977863197808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247274509 (or 1247274496 counting only the distinct ones).

The product of its (nonzero) digits is 256048128, while the sum is 73.

The spelling of 977863197808 in words is "nine hundred seventy-seven billion, eight hundred sixty-three million, one hundred ninety-seven thousand, eight hundred eight".