13885765104872 has 32 divisors (see below), whose sum is σ = 26322578137800. Its totient is φ = 6866510843904.

The previous prime is 13885765104863. The next prime is 13885765104877. The reversal of 13885765104872 is 27840156758831.

It can be written as a sum of positive squares in 4 ways, for example, as 13878053806276 + 7711298596 = 3725326^2 + 87814^2 .

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13885765104799 and 13885765104808.

It is not an unprimeable number, because it can be changed into a prime (13885765104877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5131547 + ... + 7355562.

Almost surely, 2^{13885765104872} is an apocalyptic number.

It is an amenable number.

13885765104872 is a deficient number, since it is larger than the sum of its proper divisors (12436813032928).

13885765104872 is a wasteful number, since it uses less digits than its factorization.

13885765104872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12488645 (or 12488641 counting only the distinct ones).

The product of its (nonzero) digits is 90316800, while the sum is 65.

The spelling of 13885765104872 in words is "thirteen trillion, eight hundred eighty-five billion, seven hundred sixty-five million, one hundred four thousand, eight hundred seventy-two".