50857722181 has 16 divisors (see below), whose sum is σ = 58396464000. Its totient is φ = 43387803648.

The previous prime is 50857722137. The next prime is 50857722191. The reversal of 50857722181 is 18122775805.

It is not a de Polignac number, because 50857722181 - 2¹⁹ = 50857197893 is a prime.

It is a super-2 number, since 2×50857722181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50857722191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1265706 + ... + 1305268.

It is an arithmetic number, because the mean of its divisors is an integer number (3649779000).

Almost surely, 2^50857722181 is an apocalyptic number.

It is an amenable number.

50857722181 is a deficient number, since it is larger than the sum of its proper divisors (7538741819).

50857722181 is a wasteful number, since it uses less digits than its factorization.

50857722181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40428.

The product of its (nonzero) digits is 313600, while the sum is 46.

The spelling of 50857722181 in words is "fifty billion, eight hundred fifty-seven million, seven hundred twenty-two thousand, one hundred eighty-one".