636117765341 has 2 divisors, whose sum is σ = 636117765342. Its totient is φ = 636117765340.

The previous prime is 636117765337. The next prime is 636117765347. The reversal of 636117765341 is 143567711636.

636117765341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 636054100900 + 63664441 = 797530^2 + 7979^2 .

It is a cyclic number.

It is not a de Polignac number, because 636117765341 - 2² = 636117765337 is a prime.

It is a super-2 number, since 2×636117765341² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 636117765341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636117765347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318058882670 + 318058882671.

It is an arithmetic number, because the mean of its divisors is an integer number (318058882671).

Almost surely, 2^636117765341 is an apocalyptic number.

It is an amenable number.

636117765341 is a deficient number, since it is larger than the sum of its proper divisors (1).

636117765341 is an equidigital number, since it uses as much as digits as its factorization.

636117765341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 50.

The spelling of 636117765341 in words is "six hundred thirty-six billion, one hundred seventeen million, seven hundred sixty-five thousand, three hundred forty-one".