50664861504 has 56 divisors (see below), whose sum is σ = 148945315520. Its totient is φ = 16888286592.

The previous prime is 50664861493. The next prime is 50664861547. The reversal of 50664861504 is 40516846605.

50664861504 is a `hidden beast` number, since 5 + 0 + 6 + 64 + 86 + 1 + 504 = 666.

It is a super-2 number, since 2×50664861504² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 50664861504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14658244 + ... + 14661699.

Almost surely, 2^50664861504 is an apocalyptic number.

50664861504 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

50664861504 is an abundant number, since it is smaller than the sum of its proper divisors (98280454016).

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

50664861504 is a wasteful number, since it uses less digits than its factorization.

50664861504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29319964 (or 29319948 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 50664861504 in words is "fifty billion, six hundred sixty-four million, eight hundred sixty-one thousand, five hundred four".