631136641152 has 32 divisors (see below), whose sum is σ = 1676456704080. Its totient is φ = 210378880256.

The previous prime is 631136641151. The next prime is 631136641181. The reversal of 631136641152 is 251146631136.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 631136641152.

It is not an unprimeable number, because it can be changed into a prime (631136641151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821792118 + ... + 821792885.

Almost surely, 2^631136641152 is an apocalyptic number.

It is an amenable number.

631136641152 is an abundant number, since it is smaller than the sum of its proper divisors (1045320062928).

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

631136641152 is a wasteful number, since it uses less digits than its factorization.

631136641152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643585020 (or 1643585008 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The spelling of 631136641152 in words is "six hundred thirty-one billion, one hundred thirty-six million, six hundred forty-one thousand, one hundred fifty-two".