50531515320 has 128 divisors (see below), whose sum is σ = 178097149440. Its totient is φ = 11307747840.

The previous prime is 50531515319. The next prime is 50531515337. The reversal of 50531515320 is 2351513505.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1455204 + ... + 1489523.

It is an arithmetic number, because the mean of its divisors is an integer number (1391383980).

Almost surely, 2^50531515320 is an apocalyptic number.

It is an amenable number.

50531515320 is an abundant number, since it is smaller than the sum of its proper divisors (127565634120).

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

50531515320 is a wasteful number, since it uses less digits than its factorization.

50531515320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944765 (or 2944761 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

The spelling of 50531515320 in words is "fifty billion, five hundred thirty-one million, five hundred fifteen thousand, three hundred twenty".