50139445920 has 96 divisors (see below), whose sum is σ = 162207940608. Its totient is φ = 13009148928.

The previous prime is 50139445897. The next prime is 50139445963. The reversal of 50139445920 is 2954493105.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 1393824 + ... + 1429343.

It is an arithmetic number, because the mean of its divisors is an integer number (1689666048).

Almost surely, 2^50139445920 is an apocalyptic number.

It is an amenable number.

50139445920 is an abundant number, since it is smaller than the sum of its proper divisors (112068494688).

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

50139445920 is a wasteful number, since it uses less digits than its factorization.

50139445920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823222 (or 2823214 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 50139445920 in words is "fifty billion, one hundred thirty-nine million, four hundred forty-five thousand, nine hundred twenty".