23686756349969 has 2 divisors, whose sum is σ = 23686756349970. Its totient is φ = 23686756349968.

The previous prime is 23686756349917. The next prime is 23686756349981. The reversal of 23686756349969 is 96994365768632.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17355056083600 + 6331700266369 = 4165940^2 + 2516287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23686756349969 is a prime.

It is a super-2 number, since 2×23686756349969² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23686756349989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11843378174984 + 11843378174985.

It is an arithmetic number, because the mean of its divisors is an integer number (11843378174985).

Almost surely, 2^{23686756349969} is an apocalyptic number.

It is an amenable number.

23686756349969 is a deficient number, since it is larger than the sum of its proper divisors (1).

23686756349969 is an equidigital number, since it uses as much as digits as its factorization.

23686756349969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19046845440, while the sum is 83.

The spelling of 23686756349969 in words is "twenty-three trillion, six hundred eighty-six billion, seven hundred fifty-six million, three hundred forty-nine thousand, nine hundred sixty-nine".