13698899920 has 40 divisors (see below), whose sum is σ = 31855539240. Its totient is φ = 5478597120.

The previous prime is 13698899887. The next prime is 13698899941. The reversal of 13698899920 is 2999889631.

It can be written as a sum of positive squares in 4 ways, for example, as 5391671184 + 8307228736 = 73428^2 + 91144^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598446 + ... + 620914.

It is an arithmetic number, because the mean of its divisors is an integer number (796388481).

Almost surely, 2^13698899920 is an apocalyptic number.

13698899920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13698899920 is an abundant number, since it is smaller than the sum of its proper divisors (18156639320).

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

13698899920 is a wasteful number, since it uses less digits than its factorization.

13698899920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30103 (or 30097 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 64.

The spelling of 13698899920 in words is "thirteen billion, six hundred ninety-eight million, eight hundred ninety-nine thousand, nine hundred twenty".