50913697920 has 128 divisors (see below), whose sum is σ = 169343533440. Its totient is φ = 12986671104.

The previous prime is 50913697907. The next prime is 50913697949. The reversal of 50913697920 is 2979631905.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

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, 532309 + ... + 620628.

It is an arithmetic number, because the mean of its divisors is an integer number (1322996355).

Almost surely, 2^50913697920 is an apocalyptic number.

It is an amenable number.

50913697920 is an abundant number, since it is smaller than the sum of its proper divisors (118429835520).

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

50913697920 is a wasteful number, since it uses less digits than its factorization.

50913697920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152982 (or 1152970 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 51.

The spelling of 50913697920 in words is "fifty billion, nine hundred thirteen million, six hundred ninety-seven thousand, nine hundred twenty".