36561641427631 has 2 divisors, whose sum is σ = 36561641427632. Its totient is φ = 36561641427630.

The previous prime is 36561641427593. The next prime is 36561641427667. The reversal of 36561641427631 is 13672414616563.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36561641427631 is a prime.

It is a super-2 number, since 2×36561641427631² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36561641427691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18280820713815 + 18280820713816.

It is an arithmetic number, because the mean of its divisors is an integer number (18280820713816).

Almost surely, 2^{36561641427631} is an apocalyptic number.

36561641427631 is a deficient number, since it is larger than the sum of its proper divisors (1).

36561641427631 is an equidigital number, since it uses as much as digits as its factorization.

36561641427631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 55.

The spelling of 36561641427631 in words is "thirty-six trillion, five hundred sixty-one billion, six hundred forty-one million, four hundred twenty-seven thousand, six hundred thirty-one".