23663526635213 has 2 divisors, whose sum is σ = 23663526635214. Its totient is φ = 23663526635212.

The previous prime is 23663526635209. The next prime is 23663526635239. The reversal of 23663526635213 is 31253662536632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21001936687369 + 2661589947844 = 4582787^2 + 1631438^2 .

It is a cyclic number.

It is not a de Polignac number, because 23663526635213 - 2² = 23663526635209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23663526635713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11831763317606 + 11831763317607.

It is an arithmetic number, because the mean of its divisors is an integer number (11831763317607).

Almost surely, 2^{23663526635213} is an apocalyptic number.

It is an amenable number.

23663526635213 is a deficient number, since it is larger than the sum of its proper divisors (1).

23663526635213 is an equidigital number, since it uses as much as digits as its factorization.

23663526635213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20995200, while the sum is 53.

The spelling of 23663526635213 in words is "twenty-three trillion, six hundred sixty-three billion, five hundred twenty-six million, six hundred thirty-five thousand, two hundred thirteen".