51057292218 has 16 divisors (see below), whose sum is σ = 102123702720. Its totient is φ = 17017577696.

The previous prime is 51057292177. The next prime is 51057292243. The reversal of 51057292218 is 81229275015.

It is a self number, because there is not a number n which added to its sum of digits gives 51057292218.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 306030 + ... + 442457.

It is an arithmetic number, because the mean of its divisors is an integer number (6382731420).

Almost surely, 2^51057292218 is an apocalyptic number.

51057292218 is an abundant number, since it is smaller than the sum of its proper divisors (51066410502).

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

51057292218 is a wasteful number, since it uses less digits than its factorization.

51057292218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759861.

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 51057292218 in words is "fifty-one billion, fifty-seven million, two hundred ninety-two thousand, two hundred eighteen".