17117186923 has 4 divisors (see below), whose sum is σ = 17440152768. Its totient is φ = 16794221080.

The previous prime is 17117186917. The next prime is 17117186953. The reversal of 17117186923 is 32968171171.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 17117186923 - 2²⁵ = 17083632491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17117186903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161482843 + ... + 161482948.

It is an arithmetic number, because the mean of its divisors is an integer number (4360038192).

Almost surely, 2^17117186923 is an apocalyptic number.

17117186923 is a deficient number, since it is larger than the sum of its proper divisors (322965845).

17117186923 is an equidigital number, since it uses as much as digits as its factorization.

17117186923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322965844.

The product of its digits is 127008, while the sum is 46.

The spelling of 17117186923 in words is "seventeen billion, one hundred seventeen million, one hundred eighty-six thousand, nine hundred twenty-three".