13686865831 has 8 divisors (see below), whose sum is σ = 14130082304. Its totient is φ = 13243755960.

The previous prime is 13686865813. The next prime is 13686865837. The reversal of 13686865831 is 13856868631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13686865831 - 2²⁹ = 13149994919 is a prime.

It is a super-2 number, since 2×13686865831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13686865837) 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, 296776 + ... + 339778.

It is an arithmetic number, because the mean of its divisors is an integer number (1766260288).

Almost surely, 2^13686865831 is an apocalyptic number.

13686865831 is a deficient number, since it is larger than the sum of its proper divisors (443216473).

13686865831 is a wasteful number, since it uses less digits than its factorization.

13686865831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53301.

The product of its digits is 4976640, while the sum is 55.

The spelling of 13686865831 in words is "thirteen billion, six hundred eighty-six million, eight hundred sixty-five thousand, eight hundred thirty-one".