13779931698 has 48 divisors (see below), whose sum is σ = 32163069120. Its totient is φ = 4238674272.

The previous prime is 13779931681. The next prime is 13779931709. The reversal of 13779931698 is 89613997731.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 985923 + ... + 999801.

It is an arithmetic number, because the mean of its divisors is an integer number (670063940).

Almost surely, 2^13779931698 is an apocalyptic number.

13779931698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13779931698 is an abundant number, since it is smaller than the sum of its proper divisors (18383137422).

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

13779931698 is a wasteful number, since it uses less digits than its factorization.

13779931698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18143 (or 18140 counting only the distinct ones).

The product of its digits is 15431472, while the sum is 63.

The spelling of 13779931698 in words is "thirteen billion, seven hundred seventy-nine million, nine hundred thirty-one thousand, six hundred ninety-eight".