13138679155 has 24 divisors (see below), whose sum is σ = 18410403168. Its totient is φ = 8817639168.

The previous prime is 13138679123. The next prime is 13138679159. The reversal of 13138679155 is 55197683131.

It is a happy number.

It is not a de Polignac number, because 13138679155 - 2⁵ = 13138679123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13138679099 and 13138679108.

It is not an unprimeable number, because it can be changed into a prime (13138679159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7654 + ... + 162283.

It is an arithmetic number, because the mean of its divisors is an integer number (767100132).

Almost surely, 2^13138679155 is an apocalyptic number.

13138679155 is a deficient number, since it is larger than the sum of its proper divisors (5271724013).

13138679155 is an equidigital number, since it uses as much as digits as its factorization.

13138679155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170043 (or 169996 counting only the distinct ones).

The product of its digits is 680400, while the sum is 49.

The spelling of 13138679155 in words is "thirteen billion, one hundred thirty-eight million, six hundred seventy-nine thousand, one hundred fifty-five".