23972952637 has 2 divisors, whose sum is σ = 23972952638. Its totient is φ = 23972952636.

The previous prime is 23972952623. The next prime is 23972952659. The reversal of 23972952637 is 73625927932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14173140601 + 9799812036 = 119051^2 + 98994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23972952637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23972952737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11986476318 + 11986476319.

It is an arithmetic number, because the mean of its divisors is an integer number (11986476319).

Almost surely, 2^23972952637 is an apocalyptic number.

It is an amenable number.

23972952637 is a deficient number, since it is larger than the sum of its proper divisors (1).

23972952637 is an equidigital number, since it uses as much as digits as its factorization.

23972952637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 55.

It can be divided in two parts, 2397295 and 2637, that added together give a palindrome (2399932).

The spelling of 23972952637 in words is "twenty-three billion, nine hundred seventy-two million, nine hundred fifty-two thousand, six hundred thirty-seven".