23016340621 has 2 divisors, whose sum is σ = 23016340622. Its totient is φ = 23016340620.

The previous prime is 23016340619. The next prime is 23016340639. The reversal of 23016340621 is 12604361032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20567575396 + 2448765225 = 143414^2 + 49485^2 .

It is a cyclic number.

It is not a de Polignac number, because 23016340621 - 2¹ = 23016340619 is a prime.

Together with 23016340619, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23016340621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23016340121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11508170310 + 11508170311.

It is an arithmetic number, because the mean of its divisors is an integer number (11508170311).

Almost surely, 2^23016340621 is an apocalyptic number.

It is an amenable number.

23016340621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23016340621 is an equidigital number, since it uses as much as digits as its factorization.

23016340621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 23016340621 in words is "twenty-three billion, sixteen million, three hundred forty thousand, six hundred twenty-one".