50857213680 has 1200 divisors, whose sum is σ = 224532462336. Its totient is φ = 10241925120.

The previous prime is 50857213679. The next prime is 50857213691. The reversal of 50857213680 is 8631275805.

50857213680 is a `hidden beast` number, since 5 + 0 + 8 + 572 + 13 + 68 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 696674124 + ... + 696674196.

Almost surely, 2^50857213680 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 50857213680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112266231168).

50857213680 is an abundant number, since it is smaller than the sum of its proper divisors (173675248656).

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

50857213680 is a wasteful number, since it uses less digits than its factorization.

50857213680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 50857213680 in words is "fifty billion, eight hundred fifty-seven million, two hundred thirteen thousand, six hundred eighty".