23686734252817 has 2 divisors, whose sum is σ = 23686734252818. Its totient is φ = 23686734252816.

The previous prime is 23686734252803. The next prime is 23686734252901. The reversal of 23686734252817 is 71825243768632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19221420082176 + 4465314170641 = 4384224^2 + 2113129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23686734252817 is a prime.

It is a super-2 number, since 2×23686734252817² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23686734252217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11843367126408 + 11843367126409.

It is an arithmetic number, because the mean of its divisors is an integer number (11843367126409).

Almost surely, 2^{23686734252817} is an apocalyptic number.

It is an amenable number.

23686734252817 is a deficient number, since it is larger than the sum of its proper divisors (1).

23686734252817 is an equidigital number, since it uses as much as digits as its factorization.

23686734252817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162570240, while the sum is 64.

The spelling of 23686734252817 in words is "twenty-three trillion, six hundred eighty-six billion, seven hundred thirty-four million, two hundred fifty-two thousand, eight hundred seventeen".