23855661659 has 2 divisors, whose sum is σ = 23855661660. Its totient is φ = 23855661658.

The previous prime is 23855661623. The next prime is 23855661671. The reversal of 23855661659 is 95616655832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23855661659 is a prime.

It is not a weakly prime, because it can be changed into another prime (23855681659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11927830829 + 11927830830.

It is an arithmetic number, because the mean of its divisors is an integer number (11927830830).

Almost surely, 2^23855661659 is an apocalyptic number.

23855661659 is a deficient number, since it is larger than the sum of its proper divisors (1).

23855661659 is an equidigital number, since it uses as much as digits as its factorization.

23855661659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664000, while the sum is 56.

The spelling of 23855661659 in words is "twenty-three billion, eight hundred fifty-five million, six hundred sixty-one thousand, six hundred fifty-nine".