631669935120 has 320 divisors, whose sum is σ = 2314795843584. Its totient is φ = 139440660480.

The previous prime is 631669935047. The next prime is 631669935137. The reversal of 631669935120 is 21539966136.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26184184 + ... + 26208296.

Almost surely, 2^631669935120 is an apocalyptic number.

631669935120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631669935120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1157397921792).

631669935120 is an abundant number, since it is smaller than the sum of its proper divisors (1683125908464).

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

631669935120 is a wasteful number, since it uses less digits than its factorization.

631669935120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24670 (or 24664 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 51.

The spelling of 631669935120 in words is "six hundred thirty-one billion, six hundred sixty-nine million, nine hundred thirty-five thousand, one hundred twenty".