23156187117 has 8 divisors (see below), whose sum is σ = 35285618496. Its totient is φ = 13232106912.

The previous prime is 23156187077. The next prime is 23156187121. The reversal of 23156187117 is 71178165132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23156187117 - 2⁸ = 23156186861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23156187137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551337768 + ... + 551337809.

It is an arithmetic number, because the mean of its divisors is an integer number (4410702312).

Almost surely, 2^23156187117 is an apocalyptic number.

It is an amenable number.

23156187117 is a deficient number, since it is larger than the sum of its proper divisors (12129431379).

23156187117 is a wasteful number, since it uses less digits than its factorization.

23156187117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102675587.

The product of its digits is 70560, while the sum is 42.

The spelling of 23156187117 in words is "twenty-three billion, one hundred fifty-six million, one hundred eighty-seven thousand, one hundred seventeen".