50640915528 has 480 divisors, whose sum is σ = 182345644800. Its totient is φ = 13022456832.

The previous prime is 50640915509. The next prime is 50640915581. The reversal of 50640915528 is 82551904605.

50640915528 is a `hidden beast` number, since 5 + 0 + 6 + 4 + 0 + 91 + 552 + 8 = 666.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 12412993 + ... + 12417071.

It is an arithmetic number, because the mean of its divisors is an integer number (379886760).

Almost surely, 2^50640915528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50640915528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91172822400).

50640915528 is an abundant number, since it is smaller than the sum of its proper divisors (131704729272).

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

50640915528 is a wasteful number, since it uses less digits than its factorization.

50640915528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4151 (or 4131 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 50640915528 in words is "fifty billion, six hundred forty million, nine hundred fifteen thousand, five hundred twenty-eight".