23655561983 has 2 divisors, whose sum is σ = 23655561984. Its totient is φ = 23655561982.

The previous prime is 23655561977. The next prime is 23655561991. The reversal of 23655561983 is 38916555632.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23655561983 is a prime.

It is a super-2 number, since 2×23655561983² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23655561953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11827780991 + 11827780992.

It is an arithmetic number, because the mean of its divisors is an integer number (11827780992).

Almost surely, 2^23655561983 is an apocalyptic number.

23655561983 is a deficient number, since it is larger than the sum of its proper divisors (1).

23655561983 is an equidigital number, since it uses as much as digits as its factorization.

23655561983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832000, while the sum is 53.

The spelling of 23655561983 in words is "twenty-three billion, six hundred fifty-five million, five hundred sixty-one thousand, nine hundred eighty-three".