50155511556 has 12 divisors (see below), whose sum is σ = 117029526992. Its totient is φ = 16718503848.

The previous prime is 50155511533. The next prime is 50155511569. The reversal of 50155511556 is 65511555105.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×50155511556² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2089812970 + ... + 2089812993.

Almost surely, 2^50155511556 is an apocalyptic number.

It is an amenable number.

50155511556 is an abundant number, since it is smaller than the sum of its proper divisors (66874015436).

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

50155511556 is a wasteful number, since it uses less digits than its factorization.

50155511556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179625970 (or 4179625968 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 39.

The spelling of 50155511556 in words is "fifty billion, one hundred fifty-five million, five hundred eleven thousand, five hundred fifty-six".