13118397957 has 32 divisors (see below), whose sum is σ = 22245580800. Its totient is φ = 7484571504.

The previous prime is 13118397949. The next prime is 13118397959. The reversal of 13118397957 is 75979381131.

It is not a de Polignac number, because 13118397957 - 2³ = 13118397949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13118397959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68644 + ... + 175922.

It is an arithmetic number, because the mean of its divisors is an integer number (695174400).

Almost surely, 2^13118397957 is an apocalyptic number.

It is an amenable number.

13118397957 is a deficient number, since it is larger than the sum of its proper divisors (9127182843).

13118397957 is a wasteful number, since it uses less digits than its factorization.

13118397957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107942 (or 107936 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 54.

The spelling of 13118397957 in words is "thirteen billion, one hundred eighteen million, three hundred ninety-seven thousand, nine hundred fifty-seven".