50555579640 has 64 divisors (see below), whose sum is σ = 158260953600. Its totient is φ = 12895335552.

The previous prime is 50555579603. The next prime is 50555579699. The reversal of 50555579640 is 4697555505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9155860 + ... + 9161379.

It is an arithmetic number, because the mean of its divisors is an integer number (2472827400).

Almost surely, 2^50555579640 is an apocalyptic number.

It is an amenable number.

50555579640 is an abundant number, since it is smaller than the sum of its proper divisors (107705373960).

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

50555579640 is a wasteful number, since it uses less digits than its factorization.

50555579640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18317276 (or 18317272 counting only the distinct ones).

The product of its (nonzero) digits is 4725000, while the sum is 51.

The spelling of 50555579640 in words is "fifty billion, five hundred fifty-five million, five hundred seventy-nine thousand, six hundred forty".