51515010251320 has 128 divisors (see below), whose sum is σ = 148415305397760. Its totient is φ = 15622663656960.

The previous prime is 51515010251317. The next prime is 51515010251413. The reversal of 51515010251320 is 2315201051515.

It is a congruent number.

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, 225908374 + ... + 226136293.

It is an arithmetic number, because the mean of its divisors is an integer number (1159494573420).

Almost surely, 2^{51515010251320} is an apocalyptic number.

It is an amenable number.

51515010251320 is an abundant number, since it is smaller than the sum of its proper divisors (96900295146440).

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

51515010251320 is a wasteful number, since it uses less digits than its factorization.

51515010251320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452044733 (or 452044729 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 51515010251320 in words is "fifty-one trillion, five hundred fifteen billion, ten million, two hundred fifty-one thousand, three hundred twenty".