13809638872 has 16 divisors (see below), whose sum is σ = 26381622240. Its totient is φ = 6774539616.

The previous prime is 13809638861. The next prime is 13809638891. The reversal of 13809638872 is 27883690831.

It is a super-2 number, since 2×13809638872² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16284528 + ... + 16285375.

It is an arithmetic number, because the mean of its divisors is an integer number (1648851390).

Almost surely, 2^13809638872 is an apocalyptic number.

It is an amenable number.

13809638872 is a deficient number, since it is larger than the sum of its proper divisors (12571983368).

13809638872 is a wasteful number, since it uses less digits than its factorization.

13809638872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32569962 (or 32569958 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 13809638872 in words is "thirteen billion, eight hundred nine million, six hundred thirty-eight thousand, eight hundred seventy-two".