23464720661 has 2 divisors, whose sum is σ = 23464720662. Its totient is φ = 23464720660.

The previous prime is 23464720649. The next prime is 23464720709. The reversal of 23464720661 is 16602746432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23258080036 + 206640625 = 152506^2 + 14375^2 .

It is a cyclic number.

It is not a de Polignac number, because 23464720661 - 2⁶ = 23464720597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23464720361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11732360330 + 11732360331.

It is an arithmetic number, because the mean of its divisors is an integer number (11732360331).

Almost surely, 2^23464720661 is an apocalyptic number.

It is an amenable number.

23464720661 is a deficient number, since it is larger than the sum of its proper divisors (1).

23464720661 is an equidigital number, since it uses as much as digits as its factorization.

23464720661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 23464720661 in words is "twenty-three billion, four hundred sixty-four million, seven hundred twenty thousand, six hundred sixty-one".