51259998162 has 16 divisors (see below), whose sum is σ = 102527654112. Its totient is φ = 17085389760.

The previous prime is 51259998161. The next prime is 51259998169. The reversal of 51259998162 is 26189995215.

It is not an unprimeable number, because it can be changed into a prime (51259998161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230148 + ... + 394319.

It is an arithmetic number, because the mean of its divisors is an integer number (6407978382).

Almost surely, 2^51259998162 is an apocalyptic number.

51259998162 is an abundant number, since it is smaller than the sum of its proper divisors (51267655950).

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

51259998162 is a wasteful number, since it uses less digits than its factorization.

51259998162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638153.

The product of its digits is 3499200, while the sum is 57.

The spelling of 51259998162 in words is "fifty-one billion, two hundred fifty-nine million, nine hundred ninety-eight thousand, one hundred sixty-two".