13334431685 has 16 divisors (see below), whose sum is σ = 16037406000. Its totient is φ = 10643521536.

The previous prime is 13334431673. The next prime is 13334431697. The reversal of 13334431685 is 58613443331.

It is an interprime number because it is at equal distance from previous prime (13334431673) and next prime (13334431697).

It can be written as a sum of positive squares in 8 ways, for example, as 1162605409 + 12171826276 = 34097^2 + 110326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13334431685 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6382121 + ... + 6384209.

It is an arithmetic number, because the mean of its divisors is an integer number (1002337875).

Almost surely, 2^13334431685 is an apocalyptic number.

It is an amenable number.

13334431685 is a deficient number, since it is larger than the sum of its proper divisors (2702974315).

13334431685 is a wasteful number, since it uses less digits than its factorization.

13334431685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its digits is 311040, while the sum is 41.

The spelling of 13334431685 in words is "thirteen billion, three hundred thirty-four million, four hundred thirty-one thousand, six hundred eighty-five".