8691634724761 has 2 divisors, whose sum is σ = 8691634724762. Its totient is φ = 8691634724760.

The previous prime is 8691634724711. The next prime is 8691634724797. The reversal of 8691634724761 is 1674274361968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8343114518025 + 348520206736 = 2888445^2 + 590356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8691634724761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8691634724693 and 8691634724702.

It is not a weakly prime, because it can be changed into another prime (8691634724711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4345817362380 + 4345817362381.

It is an arithmetic number, because the mean of its divisors is an integer number (4345817362381).

Almost surely, 2^{8691634724761} is an apocalyptic number.

It is an amenable number.

8691634724761 is a deficient number, since it is larger than the sum of its proper divisors (1).

8691634724761 is an equidigital number, since it uses as much as digits as its factorization.

8691634724761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 64.

The spelling of 8691634724761 in words is "eight trillion, six hundred ninety-one billion, six hundred thirty-four million, seven hundred twenty-four thousand, seven hundred sixty-one".