13685302044 has 18 divisors (see below), whose sum is σ = 34593402480. Its totient is φ = 4561767336.

The previous prime is 13685302019. The next prime is 13685302051. The reversal of 13685302044 is 44020358631.

13685302044 is a `hidden beast` number, since 1 + 3 + 68 + 530 + 20 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 380147279 = 13685302044 / (1 + 3 + 6 + 8 + 5 + 3 + 0 + 2 + 0 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190073604 + ... + 190073675.

Almost surely, 2^13685302044 is an apocalyptic number.

It is an amenable number.

13685302044 is an abundant number, since it is smaller than the sum of its proper divisors (20908100436).

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

13685302044 is a wasteful number, since it uses less digits than its factorization.

13685302044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380147289 (or 380147284 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 13685302044 in words is "thirteen billion, six hundred eighty-five million, three hundred two thousand, forty-four".