23659632647437 has 2 divisors, whose sum is σ = 23659632647438. Its totient is φ = 23659632647436.

The previous prime is 23659632647423. The next prime is 23659632647449. The reversal of 23659632647437 is 73474623695632.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12279494732521 + 11380137914916 = 3504211^2 + 3373446^2 .

It is a cyclic number.

It is not a de Polignac number, because 23659632647437 - 2¹⁵ = 23659632614669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23659632647237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11829816323718 + 11829816323719.

It is an arithmetic number, because the mean of its divisors is an integer number (11829816323719).

Almost surely, 2^{23659632647437} is an apocalyptic number.

It is an amenable number.

23659632647437 is a deficient number, since it is larger than the sum of its proper divisors (1).

23659632647437 is an equidigital number, since it uses as much as digits as its factorization.

23659632647437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 823011840, while the sum is 67.

The spelling of 23659632647437 in words is "twenty-three trillion, six hundred fifty-nine billion, six hundred thirty-two million, six hundred forty-seven thousand, four hundred thirty-seven".