5207101705681 has 2 divisors, whose sum is σ = 5207101705682. Its totient is φ = 5207101705680.

The previous prime is 5207101705669. The next prime is 5207101705703. The reversal of 5207101705681 is 1865071017025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5130184230081 + 76917475600 = 2264991^2 + 277340^2 .

It is a cyclic number.

It is not a de Polignac number, because 5207101705681 - 2⁵ = 5207101705649 is a prime.

It is a super-2 number, since 2×5207101705681² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5207101705621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2603550852840 + 2603550852841.

It is an arithmetic number, because the mean of its divisors is an integer number (2603550852841).

Almost surely, 2^{5207101705681} is an apocalyptic number.

It is an amenable number.

5207101705681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5207101705681 is an equidigital number, since it uses as much as digits as its factorization.

5207101705681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 43.

The spelling of 5207101705681 in words is "five trillion, two hundred seven billion, one hundred one million, seven hundred five thousand, six hundred eighty-one".