15117657970108 has 6 divisors (see below), whose sum is σ = 26455901447696. Its totient is φ = 7558828985052.

The previous prime is 15117657970099. The next prime is 15117657970109. The reversal of 15117657970108 is 80107975671151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15117657970109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1889707246260 + ... + 1889707246267.

Almost surely, 2^{15117657970108} is an apocalyptic number.

It is an amenable number.

15117657970108 is a deficient number, since it is larger than the sum of its proper divisors (11338243477588).

15117657970108 is a wasteful number, since it uses less digits than its factorization.

15117657970108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779414492531 (or 3779414492529 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 58.

The spelling of 15117657970108 in words is "fifteen trillion, one hundred seventeen billion, six hundred fifty-seven million, nine hundred seventy thousand, one hundred eight".