50721914880 has 1224 divisors, whose sum is σ = 228434733072. Its totient is φ = 10701766656.

The previous prime is 50721914849. The next prime is 50721914909. The reversal of 50721914880 is 8841912705.

50721914880 is a `hidden beast` number, since 507 + 21 + 9 + 1 + 48 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3901685754 + ... + 3901685766.

Almost surely, 2^50721914880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50721914880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114217366536).

50721914880 is an abundant number, since it is smaller than the sum of its proper divisors (177712818192).

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

50721914880 is an frugal number, since it uses more digits than its factorization.

50721914880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 50721914880 in words is "fifty billion, seven hundred twenty-one million, nine hundred fourteen thousand, eight hundred eighty".