13387989798 has 32 divisors (see below), whose sum is σ = 31316937600. Its totient is φ = 4227785928.

The previous prime is 13387989773. The next prime is 13387989803. The reversal of 13387989798 is 89798978331.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6523336 + ... + 6525387.

It is an arithmetic number, because the mean of its divisors is an integer number (978654300).

Almost surely, 2^13387989798 is an apocalyptic number.

13387989798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13387989798 is an abundant number, since it is smaller than the sum of its proper divisors (17928947802).

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

13387989798 is a wasteful number, since it uses less digits than its factorization.

13387989798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13048753 (or 13048747 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 72.

The spelling of 13387989798 in words is "thirteen billion, three hundred eighty-seven million, nine hundred eighty-nine thousand, seven hundred ninety-eight".