23644566137 has 2 divisors, whose sum is σ = 23644566138. Its totient is φ = 23644566136.

The previous prime is 23644566107. The next prime is 23644566151. The reversal of 23644566137 is 73166544632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19961168656 + 3683397481 = 141284^2 + 60691^2 .

It is a cyclic number.

It is not a de Polignac number, because 23644566137 - 2⁸ = 23644565881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23644566091 and 23644566100.

It is not a weakly prime, because it can be changed into another prime (23644566107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11822283068 + 11822283069.

It is an arithmetic number, because the mean of its divisors is an integer number (11822283069).

Almost surely, 2^23644566137 is an apocalyptic number.

It is an amenable number.

23644566137 is a deficient number, since it is larger than the sum of its proper divisors (1).

23644566137 is an equidigital number, since it uses as much as digits as its factorization.

23644566137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 47.

The spelling of 23644566137 in words is "twenty-three billion, six hundred forty-four million, five hundred sixty-six thousand, one hundred thirty-seven".