51631107356 has 48 divisors (see below), whose sum is σ = 92836349760. Its totient is φ = 25116480000.

The previous prime is 51631107349. The next prime is 51631107401. The reversal of 51631107356 is 65370113615.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20238281 + ... + 20240831.

It is an arithmetic number, because the mean of its divisors is an integer number (1934090620).

Almost surely, 2^51631107356 is an apocalyptic number.

It is an amenable number.

51631107356 is a deficient number, since it is larger than the sum of its proper divisors (41205242404).

51631107356 is a wasteful number, since it uses less digits than its factorization.

51631107356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486 (or 3484 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The spelling of 51631107356 in words is "fifty-one billion, six hundred thirty-one million, one hundred seven thousand, three hundred fifty-six".