23555566799 has 2 divisors, whose sum is σ = 23555566800. Its totient is φ = 23555566798.

The previous prime is 23555566777. The next prime is 23555566841. The reversal of 23555566799 is 99766555532.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23555566799 is a prime.

It is a super-2 number, since 2×23555566799² (a number of 22 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23555566399) 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, 11777783399 + 11777783400.

It is an arithmetic number, because the mean of its divisors is an integer number (11777783400).

Almost surely, 2^23555566799 is an apocalyptic number.

23555566799 is a deficient number, since it is larger than the sum of its proper divisors (1).

23555566799 is an equidigital number, since it uses as much as digits as its factorization.

23555566799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76545000, while the sum is 62.

The spelling of 23555566799 in words is "twenty-three billion, five hundred fifty-five million, five hundred sixty-six thousand, seven hundred ninety-nine".