23658778799 has 2 divisors, whose sum is σ = 23658778800. Its totient is φ = 23658778798.

The previous prime is 23658778789. The next prime is 23658778849. The reversal of 23658778799 is 99787785632.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23658778799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23658778769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11829389399 + 11829389400.

It is an arithmetic number, because the mean of its divisors is an integer number (11829389400).

Almost surely, 2^23658778799 is an apocalyptic number.

23658778799 is a deficient number, since it is larger than the sum of its proper divisors (1).

23658778799 is an equidigital number, since it uses as much as digits as its factorization.

23658778799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320060160, while the sum is 71.

The spelling of 23658778799 in words is "twenty-three billion, six hundred fifty-eight million, seven hundred seventy-eight thousand, seven hundred ninety-nine".