631170538660 has 96 divisors (see below), whose sum is σ = 1384793625600. Its totient is φ = 241446576000.

The previous prime is 631170538633. The next prime is 631170538679. The reversal of 631170538660 is 66835071136.

It is a self number, because there is not a number n which added to its sum of digits gives 631170538660.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12710961 + ... + 12760519.

It is an arithmetic number, because the mean of its divisors is an integer number (14424933600).

Almost surely, 2^631170538660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631170538660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692396812800).

631170538660 is an abundant number, since it is smaller than the sum of its proper divisors (753623086940).

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

631170538660 is a wasteful number, since it uses less digits than its factorization.

631170538660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49921 (or 49919 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 631170538660 in words is "six hundred thirty-one billion, one hundred seventy million, five hundred thirty-eight thousand, six hundred sixty".