23151164965 has 4 divisors (see below), whose sum is σ = 27781397964. Its totient is φ = 18520931968.

The previous prime is 23151164951. The next prime is 23151164977. The reversal of 23151164965 is 56946115132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13282332001 + 9868832964 = 115249^2 + 99342^2 .

It is a cyclic number.

It is not a de Polignac number, because 23151164965 - 2⁹ = 23151164453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2315116492 + ... + 2315116501.

It is an arithmetic number, because the mean of its divisors is an integer number (6945349491).

Almost surely, 2^23151164965 is an apocalyptic number.

It is an amenable number.

23151164965 is a deficient number, since it is larger than the sum of its proper divisors (4630232999).

23151164965 is an equidigital number, since it uses as much as digits as its factorization.

23151164965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630232998.

The product of its digits is 194400, while the sum is 43.

The spelling of 23151164965 in words is "twenty-three billion, one hundred fifty-one million, one hundred sixty-four thousand, nine hundred sixty-five".