23665932109 has 4 divisors (see below), whose sum is σ = 23669321404. Its totient is φ = 23662542816.

The previous prime is 23665932107. The next prime is 23665932131. The reversal of 23665932109 is 90123956632.

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 3776471209 + 19889460900 = 61453^2 + 141030^2 .

It is a cyclic number.

It is not a de Polignac number, because 23665932109 - 2¹ = 23665932107 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 (23665932107) 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, 1684152 + ... + 1698145.

It is an arithmetic number, because the mean of its divisors is an integer number (5917330351).

Almost surely, 2^23665932109 is an apocalyptic number.

It is an amenable number.

23665932109 is a deficient number, since it is larger than the sum of its proper divisors (3389295).

23665932109 is an equidigital number, since it uses as much as digits as its factorization.

23665932109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389294.

The product of its (nonzero) digits is 524880, while the sum is 46.

The spelling of 23665932109 in words is "twenty-three billion, six hundred sixty-five million, nine hundred thirty-two thousand, one hundred nine".