7071718121137 has 2 divisors, whose sum is σ = 7071718121138. Its totient is φ = 7071718121136.

The previous prime is 7071718121129. The next prime is 7071718121197. The reversal of 7071718121137 is 7311218171707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4102727219361 + 2968990901776 = 2025519^2 + 1723076^2 .

It is a cyclic number.

It is not a de Polignac number, because 7071718121137 - 2³ = 7071718121129 is a prime.

It is not a weakly prime, because it can be changed into another prime (7071718121197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3535859060568 + 3535859060569.

It is an arithmetic number, because the mean of its divisors is an integer number (3535859060569).

Almost surely, 2^{7071718121137} is an apocalyptic number.

It is an amenable number.

7071718121137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7071718121137 is an equidigital number, since it uses as much as digits as its factorization.

7071718121137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115248, while the sum is 46.

The spelling of 7071718121137 in words is "seven trillion, seventy-one billion, seven hundred eighteen million, one hundred twenty-one thousand, one hundred thirty-seven".