50721515700 has 72 divisors (see below), whose sum is σ = 148179140928. Its totient is φ = 13394411520.

The previous prime is 50721515641. The next prime is 50721515753. The reversal of 50721515700 is 751512705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 789837 + ... + 851636.

It is an arithmetic number, because the mean of its divisors is an integer number (2058043624).

Almost surely, 2^50721515700 is an apocalyptic number.

50721515700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

50721515700 is an abundant number, since it is smaller than the sum of its proper divisors (97457625228).

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

50721515700 is a wasteful number, since it uses less digits than its factorization.

50721515700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641593 (or 1641586 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 33.

The spelling of 50721515700 in words is "fifty billion, seven hundred twenty-one million, five hundred fifteen thousand, seven hundred".