23496690209 has 2 divisors, whose sum is σ = 23496690210. Its totient is φ = 23496690208.

The previous prime is 23496690149. The next prime is 23496690227. The reversal of 23496690209 is 90209669432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21339366400 + 2157323809 = 146080^2 + 46447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23496690209 is a prime.

It is not a weakly prime, because it can be changed into another prime (23496690299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11748345104 + 11748345105.

It is an arithmetic number, because the mean of its divisors is an integer number (11748345105).

Almost surely, 2^23496690209 is an apocalyptic number.

It is an amenable number.

23496690209 is a deficient number, since it is larger than the sum of its proper divisors (1).

23496690209 is an equidigital number, since it uses as much as digits as its factorization.

23496690209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 23496690209 in words is "twenty-three billion, four hundred ninety-six million, six hundred ninety thousand, two hundred nine".