50491125698 has 16 divisors (see below), whose sum is σ = 81613727160. Its totient is φ = 23288985216.

The previous prime is 50491125649. The next prime is 50491125701. The reversal of 50491125698 is 89652119405.

It can be written as a sum of positive squares in 4 ways, for example, as 14072365129 + 36418760569 = 118627^2 + 190837^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566483 + ... + 649526.

Almost surely, 2^50491125698 is an apocalyptic number.

50491125698 is a deficient number, since it is larger than the sum of its proper divisors (31122601462).

50491125698 is a wasteful number, since it uses less digits than its factorization.

50491125698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217621.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 50491125698 in words is "fifty billion, four hundred ninety-one million, one hundred twenty-five thousand, six hundred ninety-eight".