23129457893 has 2 divisors, whose sum is σ = 23129457894. Its totient is φ = 23129457892.

The previous prime is 23129457737. The next prime is 23129457917. The reversal of 23129457893 is 39875492132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15138349444 + 7991108449 = 123038^2 + 89393^2 .

It is a cyclic number.

It is not a de Polignac number, because 23129457893 - 2¹² = 23129453797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23129457493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11564728946 + 11564728947.

It is an arithmetic number, because the mean of its divisors is an integer number (11564728947).

Almost surely, 2^23129457893 is an apocalyptic number.

It is an amenable number.

23129457893 is a deficient number, since it is larger than the sum of its proper divisors (1).

23129457893 is an equidigital number, since it uses as much as digits as its factorization.

23129457893 is an evil number, because the sum of its binary digits is even.

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

The spelling of 23129457893 in words is "twenty-three billion, one hundred twenty-nine million, four hundred fifty-seven thousand, eight hundred ninety-three".