631964988772 has 24 divisors (see below), whose sum is σ = 1218708873536. Its totient is φ = 284892981408.

The previous prime is 631964988679. The next prime is 631964988791. The reversal of 631964988772 is 277889469136.

It is a happy 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, 141313728 + ... + 141318199.

Almost surely, 2^631964988772 is an apocalyptic number.

It is an amenable number.

631964988772 is a deficient number, since it is larger than the sum of its proper divisors (586743884764).

631964988772 is a wasteful number, since it uses less digits than its factorization.

631964988772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282631987 (or 282631985 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 70.

The spelling of 631964988772 in words is "six hundred thirty-one billion, nine hundred sixty-four million, nine hundred eighty-eight thousand, seven hundred seventy-two".