636622116607 has 2 divisors, whose sum is σ = 636622116608. Its totient is φ = 636622116606.

The previous prime is 636622116569. The next prime is 636622116671. The reversal of 636622116607 is 706611226636.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-636622116607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636622116007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318311058303 + 318311058304.

It is an arithmetic number, because the mean of its divisors is an integer number (318311058304).

Almost surely, 2^636622116607 is an apocalyptic number.

636622116607 is a deficient number, since it is larger than the sum of its proper divisors (1).

636622116607 is an equidigital number, since it uses as much as digits as its factorization.

636622116607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 636622116607 in words is "six hundred thirty-six billion, six hundred twenty-two million, one hundred sixteen thousand, six hundred seven".