636160322656643 has 2 divisors, whose sum is σ = 636160322656644. Its totient is φ = 636160322656642.

The previous prime is 636160322656597. The next prime is 636160322656669. The reversal of 636160322656643 is 346656223061636.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-636160322656643 is a prime.

It is a super-2 number, since 2×636160322656643² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (636160322646643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318080161328321 + 318080161328322.

It is an arithmetic number, because the mean of its divisors is an integer number (318080161328322).

Almost surely, 2^{636160322656643} is an apocalyptic number.

636160322656643 is a deficient number, since it is larger than the sum of its proper divisors (1).

636160322656643 is an equidigital number, since it uses as much as digits as its factorization.

636160322656643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100776960, while the sum is 59.

The spelling of 636160322656643 in words is "six hundred thirty-six trillion, one hundred sixty billion, three hundred twenty-two million, six hundred fifty-six thousand, six hundred forty-three".