23121155177 has 16 divisors (see below), whose sum is σ = 24093417600. Its totient is φ = 22160920320.

The previous prime is 23121155159. The next prime is 23121155243. The reversal of 23121155177 is 77155112132.

It is a cyclic number.

It is not a de Polignac number, because 23121155177 - 2⁸ = 23121154921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23121155117) 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, 4263974 + ... + 4269392.

It is an arithmetic number, because the mean of its divisors is an integer number (1505838600).

Almost surely, 2^23121155177 is an apocalyptic number.

It is an amenable number.

23121155177 is a deficient number, since it is larger than the sum of its proper divisors (972262423).

23121155177 is a wasteful number, since it uses less digits than its factorization.

23121155177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6496.

The product of its digits is 14700, while the sum is 35.

The spelling of 23121155177 in words is "twenty-three billion, one hundred twenty-one million, one hundred fifty-five thousand, one hundred seventy-seven".