3685536438517 has 2 divisors, whose sum is σ = 3685536438518. Its totient is φ = 3685536438516.

The previous prime is 3685536438503. The next prime is 3685536438599. The reversal of 3685536438517 is 7158346355863.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3685455420516 + 81018001 = 1919754^2 + 9001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3685536438517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3685536438217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1842768219258 + 1842768219259.

It is an arithmetic number, because the mean of its divisors is an integer number (1842768219259).

Almost surely, 2^{3685536438517} is an apocalyptic number.

It is an amenable number.

3685536438517 is a deficient number, since it is larger than the sum of its proper divisors (1).

3685536438517 is an equidigital number, since it uses as much as digits as its factorization.

3685536438517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728000, while the sum is 64.

The spelling of 3685536438517 in words is "three trillion, six hundred eighty-five billion, five hundred thirty-six million, four hundred thirty-eight thousand, five hundred seventeen".