631977698496 has 28 divisors (see below), whose sum is σ = 1672107661112. Its totient is φ = 210659232768.

The previous prime is 631977698477. The next prime is 631977698509. The reversal of 631977698496 is 694896779136.

It is a super-2 number, since 2×631977698496² (a number of 24 digits) contains 22 as substring.

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, 1645775065 + ... + 1645775448.

It is an arithmetic number, because the mean of its divisors is an integer number (59718130754).

Almost surely, 2^631977698496 is an apocalyptic number.

It is an amenable number.

631977698496 is an abundant number, since it is smaller than the sum of its proper divisors (1040129962616).

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

631977698496 is a wasteful number, since it uses less digits than its factorization.

631977698496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291550528 (or 3291550518 counting only the distinct ones).

The product of its digits is 740710656, while the sum is 75.

The spelling of 631977698496 in words is "six hundred thirty-one billion, nine hundred seventy-seven million, six hundred ninety-eight thousand, four hundred ninety-six".