99997618175 has 48 divisors (see below), whose sum is σ = 153710161920. Its totient is φ = 62839635840.

The previous prime is 99997618163. The next prime is 99997618243. The reversal of 99997618175 is 57181679999.

It is a Cunningham number, because it is equal to 316224²-1.

It is not a de Polignac number, because 99997618175 - 2⁶ = 99997618111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99997618099 and 99997618108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158114 + ... + 474336.

It is an arithmetic number, because the mean of its divisors is an integer number (3202295040).

Almost surely, 2^99997618175 is an apocalyptic number.

99997618175 is a deficient number, since it is larger than the sum of its proper divisors (53712543745).

99997618175 is a wasteful number, since it uses less digits than its factorization.

99997618175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316392 (or 316387 counting only the distinct ones).

The product of its digits is 77157360, while the sum is 71.

The spelling of 99997618175 in words is "ninety-nine billion, nine hundred ninety-seven million, six hundred eighteen thousand, one hundred seventy-five".