13118266161 has 96 divisors (see below), whose sum is σ = 25728917760. Its totient is φ = 6219417600.

The previous prime is 13118266127. The next prime is 13118266169. The reversal of 13118266161 is 16166281131.

It is a happy number.

13118266161 is a `hidden beast` number, since 1 + 3 + 1 + 18 + 26 + 616 + 1 = 666.

It is not a de Polignac number, because 13118266161 - 2¹⁰ = 13118265137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13118266169) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 793621 + ... + 809981.

It is an arithmetic number, because the mean of its divisors is an integer number (268009560).

Almost surely, 2^13118266161 is an apocalyptic number.

13118266161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13118266161 is a deficient number, since it is larger than the sum of its proper divisors (12610651599).

13118266161 is a wasteful number, since it uses less digits than its factorization.

13118266161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16487 (or 16484 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The spelling of 13118266161 in words is "thirteen billion, one hundred eighteen million, two hundred sixty-six thousand, one hundred sixty-one".