23616503621 has 2 divisors, whose sum is σ = 23616503622. Its totient is φ = 23616503620.

The previous prime is 23616503593. The next prime is 23616503641. The reversal of 23616503621 is 12630561632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15076156225 + 8540347396 = 122785^2 + 92414^2 .

It is a cyclic number.

It is not a de Polignac number, because 23616503621 - 2¹⁸ = 23616241477 is a prime.

It is a super-2 number, since 2×23616503621² (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 (23616503641) 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, 11808251810 + 11808251811.

It is an arithmetic number, because the mean of its divisors is an integer number (11808251811).

Almost surely, 2^23616503621 is an apocalyptic number.

It is an amenable number.

23616503621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23616503621 is an equidigital number, since it uses as much as digits as its factorization.

23616503621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 23616503621 in words is "twenty-three billion, six hundred sixteen million, five hundred three thousand, six hundred twenty-one".