13988602840 has 32 divisors (see below), whose sum is σ = 31569474960. Its totient is φ = 5578531200.

The previous prime is 13988602819. The next prime is 13988602871. The reversal of 13988602840 is 4820688931.

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, 515031 + ... + 541510.

Almost surely, 2^13988602840 is an apocalyptic number.

13988602840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13988602840 is an abundant number, since it is smaller than the sum of its proper divisors (17580872120).

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

13988602840 is a wasteful number, since it uses less digits than its factorization.

13988602840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056883 (or 1056879 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 13988602840 in words is "thirteen billion, nine hundred eighty-eight million, six hundred two thousand, eight hundred forty".