23686736349977 has 2 divisors, whose sum is σ = 23686736349978. Its totient is φ = 23686736349976.

The previous prime is 23686736349923. The next prime is 23686736350087. The reversal of 23686736349977 is 77994363768632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21298261920016 + 2388474429961 = 4615004^2 + 1545469^2 .

It is a cyclic number.

It is not a de Polignac number, because 23686736349977 - 2⁴⁰ = 22587224722201 is a prime.

It is a super-2 number, since 2×23686736349977² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23686736340977) 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, 11843368174988 + 11843368174989.

It is an arithmetic number, because the mean of its divisors is an integer number (11843368174989).

Almost surely, 2^{23686736349977} is an apocalyptic number.

It is an amenable number.

23686736349977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23686736349977 is an equidigital number, since it uses as much as digits as its factorization.

23686736349977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10369949184, while the sum is 80.

The spelling of 23686736349977 in words is "twenty-three trillion, six hundred eighty-six billion, seven hundred thirty-six million, three hundred forty-nine thousand, nine hundred seventy-seven".