8688015631961 has 2 divisors, whose sum is σ = 8688015631962. Its totient is φ = 8688015631960.

The previous prime is 8688015631907. The next prime is 8688015631973. The reversal of 8688015631961 is 1691365108868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8688015631936 + 25 = 2947544^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 8688015631961 - 2¹⁴ = 8688015615577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8688015631894 and 8688015631903.

It is not a weakly prime, because it can be changed into another prime (8688015631661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4344007815980 + 4344007815981.

It is an arithmetic number, because the mean of its divisors is an integer number (4344007815981).

Almost surely, 2^{8688015631961} is an apocalyptic number.

It is an amenable number.

8688015631961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8688015631961 is an equidigital number, since it uses as much as digits as its factorization.

8688015631961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 62.

The spelling of 8688015631961 in words is "eight trillion, six hundred eighty-eight billion, fifteen million, six hundred thirty-one thousand, nine hundred sixty-one".