23623294621 has 2 divisors, whose sum is σ = 23623294622. Its totient is φ = 23623294620.

The previous prime is 23623294613. The next prime is 23623294657. The reversal of 23623294621 is 12649232632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22063834521 + 1559460100 = 148539^2 + 39490^2 .

It is a cyclic number.

It is not a de Polignac number, because 23623294621 - 2³ = 23623294613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23623294421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11811647310 + 11811647311.

It is an arithmetic number, because the mean of its divisors is an integer number (11811647311).

Almost surely, 2^23623294621 is an apocalyptic number.

It is an amenable number.

23623294621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23623294621 is an equidigital number, since it uses as much as digits as its factorization.

23623294621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 40.

The spelling of 23623294621 in words is "twenty-three billion, six hundred twenty-three million, two hundred ninety-four thousand, six hundred twenty-one".