13869281376 has 72 divisors (see below), whose sum is σ = 40901561064. Its totient is φ = 4623091200.

The previous prime is 13869281347. The next prime is 13869281399. The reversal of 13869281376 is 67318296831.

13869281376 is a `hidden beast` number, since 138 + 69 + 2 + 81 + 376 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 884025 + ... + 899576.

It is an arithmetic number, because the mean of its divisors is an integer number (568077237).

Almost surely, 2^13869281376 is an apocalyptic number.

13869281376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13869281376 is an abundant number, since it is smaller than the sum of its proper divisors (27032279688).

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

13869281376 is an equidigital number, since it uses as much as digits as its factorization.

13869281376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783626 (or 1783606 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 13869281376 in words is "thirteen billion, eight hundred sixty-nine million, two hundred eighty-one thousand, three hundred seventy-six".