23897454589 has 2 divisors, whose sum is σ = 23897454590. Its totient is φ = 23897454588.

The previous prime is 23897454571. The next prime is 23897454619. The reversal of 23897454589 is 98545479832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18561882564 + 5335572025 = 136242^2 + 73045^2 .

It is a cyclic number.

It is not a de Polignac number, because 23897454589 - 2¹⁹ = 23896930301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23897454589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23897454509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11948727294 + 11948727295.

It is an arithmetic number, because the mean of its divisors is an integer number (11948727295).

Almost surely, 2^23897454589 is an apocalyptic number.

It is an amenable number.

23897454589 is a deficient number, since it is larger than the sum of its proper divisors (1).

23897454589 is an equidigital number, since it uses as much as digits as its factorization.

23897454589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87091200, while the sum is 64.

The spelling of 23897454589 in words is "twenty-three billion, eight hundred ninety-seven million, four hundred fifty-four thousand, five hundred eighty-nine".