108997718957 has 16 divisors (see below), whose sum is σ = 118738224000. Its totient is φ = 99739975104.

The previous prime is 108997718933. The next prime is 108997719023. The reversal of 108997718957 is 759817799801.

It is a cyclic number.

It is not a de Polignac number, because 108997718957 - 2¹⁴ = 108997702573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108997718257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676907 + ... + 822312.

It is an arithmetic number, because the mean of its divisors is an integer number (7421139000).

Almost surely, 2^108997718957 is an apocalyptic number.

It is an amenable number.

108997718957 is a deficient number, since it is larger than the sum of its proper divisors (9740505043).

108997718957 is a wasteful number, since it uses less digits than its factorization.

108997718957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499380.

The product of its (nonzero) digits is 80015040, while the sum is 71.

The spelling of 108997718957 in words is "one hundred eight billion, nine hundred ninety-seven million, seven hundred eighteen thousand, nine hundred fifty-seven".