23306561651 has 2 divisors, whose sum is σ = 23306561652. Its totient is φ = 23306561650.

The previous prime is 23306561611. The next prime is 23306561657. The reversal of 23306561651 is 15616560332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23306561651 - 2¹⁸ = 23306299507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (23306561657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11653280825 + 11653280826.

It is an arithmetic number, because the mean of its divisors is an integer number (11653280826).

Almost surely, 2^23306561651 is an apocalyptic number.

23306561651 is a deficient number, since it is larger than the sum of its proper divisors (1).

23306561651 is an equidigital number, since it uses as much as digits as its factorization.

23306561651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 23306561651 in words is "twenty-three billion, three hundred six million, five hundred sixty-one thousand, six hundred fifty-one".