23897523491 has 2 divisors, whose sum is σ = 23897523492. Its totient is φ = 23897523490.

The previous prime is 23897523451. The next prime is 23897523493. The reversal of 23897523491 is 19432579832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23897523491 - 2³⁰ = 22823781667 is a prime.

Together with 23897523493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23897523493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11948761745 + 11948761746.

It is an arithmetic number, because the mean of its divisors is an integer number (11948761746).

Almost surely, 2^23897523491 is an apocalyptic number.

23897523491 is a deficient number, since it is larger than the sum of its proper divisors (1).

23897523491 is an equidigital number, since it uses as much as digits as its factorization.

23897523491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 53.

The spelling of 23897523491 in words is "twenty-three billion, eight hundred ninety-seven million, five hundred twenty-three thousand, four hundred ninety-one".