23502664121 has 2 divisors, whose sum is σ = 23502664122. Its totient is φ = 23502664120.

The previous prime is 23502664079. The next prime is 23502664139. The reversal of 23502664121 is 12146620532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17751565225 + 5751098896 = 133235^2 + 75836^2 .

It is a cyclic number.

It is not a de Polignac number, because 23502664121 - 2¹⁸ = 23502401977 is a prime.

It is not a weakly prime, because it can be changed into another prime (23502664181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11751332060 + 11751332061.

It is an arithmetic number, because the mean of its divisors is an integer number (11751332061).

Almost surely, 2^23502664121 is an apocalyptic number.

It is an amenable number.

23502664121 is a deficient number, since it is larger than the sum of its proper divisors (1).

23502664121 is an equidigital number, since it uses as much as digits as its factorization.

23502664121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 23502664121 in words is "twenty-three billion, five hundred two million, six hundred sixty-four thousand, one hundred twenty-one".