13291986840 has 64 divisors (see below), whose sum is σ = 43501052160. Its totient is φ = 3222299520.

The previous prime is 13291986811. The next prime is 13291986859. The reversal of 13291986840 is 4868919231.

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, 5033524 + ... + 5036163.

It is an arithmetic number, because the mean of its divisors is an integer number (679703940).

Almost surely, 2^13291986840 is an apocalyptic number.

13291986840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13291986840 is an abundant number, since it is smaller than the sum of its proper divisors (30209065320).

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

13291986840 is a wasteful number, since it uses less digits than its factorization.

13291986840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10069712 (or 10069708 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 13291986840 in words is "thirteen billion, two hundred ninety-one million, nine hundred eighty-six thousand, eight hundred forty".