23366838637 has 2 divisors, whose sum is σ = 23366838638. Its totient is φ = 23366838636.

The previous prime is 23366838629. The next prime is 23366838683. The reversal of 23366838637 is 73683866332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19124400681 + 4242437956 = 138291^2 + 65134^2 .

It is a cyclic number.

It is not a de Polignac number, because 23366838637 - 2³ = 23366838629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23366838617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11683419318 + 11683419319.

It is an arithmetic number, because the mean of its divisors is an integer number (11683419319).

Almost surely, 2^23366838637 is an apocalyptic number.

It is an amenable number.

23366838637 is a deficient number, since it is larger than the sum of its proper divisors (1).

23366838637 is an equidigital number, since it uses as much as digits as its factorization.

23366838637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 55.

The spelling of 23366838637 in words is "twenty-three billion, three hundred sixty-six million, eight hundred thirty-eight thousand, six hundred thirty-seven".