23966136479 has 2 divisors, whose sum is σ = 23966136480. Its totient is φ = 23966136478.

The previous prime is 23966136449. The next prime is 23966136497. The reversal of 23966136479 is 97463166932.

Together with next prime (23966136497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23966136479 - 2¹² = 23966132383 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23966136449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11983068239 + 11983068240.

It is an arithmetic number, because the mean of its divisors is an integer number (11983068240).

Almost surely, 2^23966136479 is an apocalyptic number.

23966136479 is a deficient number, since it is larger than the sum of its proper divisors (1).

23966136479 is an equidigital number, since it uses as much as digits as its factorization.

23966136479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 56.

The spelling of 23966136479 in words is "twenty-three billion, nine hundred sixty-six million, one hundred thirty-six thousand, four hundred seventy-nine".