23897522437 has 2 divisors, whose sum is σ = 23897522438. Its totient is φ = 23897522436.

The previous prime is 23897522423. The next prime is 23897522459. The reversal of 23897522437 is 73422579832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12329659521 + 11567862916 = 111039^2 + 107554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23897522437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23897522477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11948761218 + 11948761219.

It is an arithmetic number, because the mean of its divisors is an integer number (11948761219).

Almost surely, 2^23897522437 is an apocalyptic number.

It is an amenable number.

23897522437 is a deficient number, since it is larger than the sum of its proper divisors (1).

23897522437 is an equidigital number, since it uses as much as digits as its factorization.

23897522437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 52.

The spelling of 23897522437 in words is "twenty-three billion, eight hundred ninety-seven million, five hundred twenty-two thousand, four hundred thirty-seven".