23665111117 has 2 divisors, whose sum is σ = 23665111118. Its totient is φ = 23665111116.

The previous prime is 23665111109. The next prime is 23665111139. The reversal of 23665111117 is 71111156632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23625534436 + 39576681 = 153706^2 + 6291^2 .

It is a cyclic number.

It is not a de Polignac number, because 23665111117 - 2³ = 23665111109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23665111177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11832555558 + 11832555559.

It is an arithmetic number, because the mean of its divisors is an integer number (11832555559).

Almost surely, 2^23665111117 is an apocalyptic number.

It is an amenable number.

23665111117 is a deficient number, since it is larger than the sum of its proper divisors (1).

23665111117 is an equidigital number, since it uses as much as digits as its factorization.

23665111117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 34.

Adding to 23665111117 its reverse (71111156632), we get a palindrome (94776267749).

The spelling of 23665111117 in words is "twenty-three billion, six hundred sixty-five million, one hundred eleven thousand, one hundred seventeen".