13686118138 has 16 divisors (see below), whose sum is σ = 25594818624. Its totient is φ = 5332253760.

The previous prime is 13686118091. The next prime is 13686118189. The reversal of 13686118138 is 83181168631.

It is a super-3 number, since 3×13686118138³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44435295 + ... + 44435602.

It is an arithmetic number, because the mean of its divisors is an integer number (1599676164).

Almost surely, 2^13686118138 is an apocalyptic number.

13686118138 is a deficient number, since it is larger than the sum of its proper divisors (11908700486).

13686118138 is a wasteful number, since it uses less digits than its factorization.

13686118138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88870917.

The product of its digits is 165888, while the sum is 46.

The spelling of 13686118138 in words is "thirteen billion, six hundred eighty-six million, one hundred eighteen thousand, one hundred thirty-eight".