51250331616 has 48 divisors (see below), whose sum is σ = 146762316288. Its totient is φ = 15530403200.

The previous prime is 51250331599. The next prime is 51250331621. The reversal of 51250331616 is 61613305215.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24265200 + ... + 24267311.

It is an arithmetic number, because the mean of its divisors is an integer number (3057548256).

Almost surely, 2^51250331616 is an apocalyptic number.

It is an amenable number.

51250331616 is an abundant number, since it is smaller than the sum of its proper divisors (95511984672).

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

51250331616 is a wasteful number, since it uses less digits than its factorization.

51250331616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48532535 (or 48532527 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 51250331616 in words is "fifty-one billion, two hundred fifty million, three hundred thirty-one thousand, six hundred sixteen".