23165393789 has 4 divisors (see below), whose sum is σ = 23195996124. Its totient is φ = 23134791456.

The previous prime is 23165393773. The next prime is 23165393837. The reversal of 23165393789 is 98739356132.

It is a happy number.

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 15776616025 + 7388777764 = 125605^2 + 85958^2 .

It is a cyclic number.

It is not a de Polignac number, because 23165393789 - 2⁴ = 23165393773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23165323789) 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, 15300032 + ... + 15301545.

It is an arithmetic number, because the mean of its divisors is an integer number (5798999031).

Almost surely, 2^23165393789 is an apocalyptic number.

It is an amenable number.

23165393789 is a deficient number, since it is larger than the sum of its proper divisors (30602335).

23165393789 is an equidigital number, since it uses as much as digits as its factorization.

23165393789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30602334.

The product of its digits is 7348320, while the sum is 56.

The spelling of 23165393789 in words is "twenty-three billion, one hundred sixty-five million, three hundred ninety-three thousand, seven hundred eighty-nine".