13881381375 has 32 divisors (see below), whose sum is σ = 23106380544. Its totient is φ = 7400916000.

The previous prime is 13881381373. The next prime is 13881381391. The reversal of 13881381375 is 57318318831.

It is not a de Polignac number, because 13881381375 - 2¹ = 13881381373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13881381373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1845372 + ... + 1852878.

It is an arithmetic number, because the mean of its divisors is an integer number (722074392).

Almost surely, 2^13881381375 is an apocalyptic number.

13881381375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13881381375 is a deficient number, since it is larger than the sum of its proper divisors (9224999169).

13881381375 is an equidigital number, since it uses as much as digits as its factorization.

13881381375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12456 (or 12446 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The spelling of 13881381375 in words is "thirteen billion, eight hundred eighty-one million, three hundred eighty-one thousand, three hundred seventy-five".