631956544272 has 80 divisors (see below), whose sum is σ = 1814344132480. Its totient is φ = 210606334848.

The previous prime is 631956544243. The next prime is 631956544279. The reversal of 631956544272 is 272445659136.

It is a happy number.

631956544272 is a `hidden beast` number, since 6 + 3 + 1 + 9 + 565 + 4 + 4 + 2 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (631956544279) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1857558 + ... + 2171274.

It is an arithmetic number, because the mean of its divisors is an integer number (22679301656).

Almost surely, 2^631956544272 is an apocalyptic number.

It is an amenable number.

631956544272 is an abundant number, since it is smaller than the sum of its proper divisors (1182387588208).

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

631956544272 is a wasteful number, since it uses less digits than its factorization.

631956544272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318397 (or 318385 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The spelling of 631956544272 in words is "six hundred thirty-one billion, nine hundred fifty-six million, five hundred forty-four thousand, two hundred seventy-two".