23861620399 has 2 divisors, whose sum is σ = 23861620400. Its totient is φ = 23861620398.

The previous prime is 23861620379. The next prime is 23861620403. The reversal of 23861620399 is 99302616832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23861620399 - 2⁷ = 23861620271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23861620339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11930810199 + 11930810200.

It is an arithmetic number, because the mean of its divisors is an integer number (11930810200).

Almost surely, 2^23861620399 is an apocalyptic number.

23861620399 is a deficient number, since it is larger than the sum of its proper divisors (1).

23861620399 is an equidigital number, since it uses as much as digits as its factorization.

23861620399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 23861620399 in words is "twenty-three billion, eight hundred sixty-one million, six hundred twenty thousand, three hundred ninety-nine".