23555566841 has 2 divisors, whose sum is σ = 23555566842. Its totient is φ = 23555566840.

The previous prime is 23555566799. The next prime is 23555566919. The reversal of 23555566841 is 14866555532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17993539600 + 5562027241 = 134140^2 + 74579^2 .

It is a cyclic number.

It is not a de Polignac number, because 23555566841 - 2⁶ = 23555566777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23555566841.

It is not a weakly prime, because it can be changed into another prime (23555566241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11777783420 + 11777783421.

It is an arithmetic number, because the mean of its divisors is an integer number (11777783421).

Almost surely, 2^23555566841 is an apocalyptic number.

It is an amenable number.

23555566841 is a deficient number, since it is larger than the sum of its proper divisors (1).

23555566841 is an equidigital number, since it uses as much as digits as its factorization.

23555566841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320000, while the sum is 50.

The spelling of 23555566841 in words is "twenty-three billion, five hundred fifty-five million, five hundred sixty-six thousand, eight hundred forty-one".