50811608520 has 48 divisors (see below), whose sum is σ = 165137728860. Its totient is φ = 13549762176.

The previous prime is 50811608503. The next prime is 50811608521. The reversal of 50811608520 is 2580611805.

50811608520 is a `hidden beast` number, since 50 + 81 + 1 + 6 + 0 + 8 + 520 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49516040484 + 1295568036 = 222522^2 + 35994^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (50811608521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70571319 + ... + 70572038.

Almost surely, 2^50811608520 is an apocalyptic number.

It is an amenable number.

50811608520 is an abundant number, since it is smaller than the sum of its proper divisors (114326120340).

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

50811608520 is a wasteful number, since it uses less digits than its factorization.

50811608520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141143374 (or 141143367 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 50811608520 in words is "fifty billion, eight hundred eleven million, six hundred eight thousand, five hundred twenty".