51631782960 has 80 divisors (see below), whose sum is σ = 160204460544. Its totient is φ = 13755922176.

The previous prime is 51631782913. The next prime is 51631782973. The reversal of 51631782960 is 6928713615.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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, 167199 + ... + 362241.

Almost surely, 2^51631782960 is an apocalyptic number.

It is an amenable number.

51631782960 is an abundant number, since it is smaller than the sum of its proper divisors (108572677584).

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

51631782960 is a wasteful number, since it uses less digits than its factorization.

51631782960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196162 (or 196156 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 51631782960 in words is "fifty-one billion, six hundred thirty-one million, seven hundred eighty-two thousand, nine hundred sixty".