115715373516181 has 2 divisors, whose sum is σ = 115715373516182. Its totient is φ = 115715373516180.

The previous prime is 115715373516143. The next prime is 115715373516221. The reversal of 115715373516181 is 181615373517511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73188606741156 + 42526766775025 = 8555034^2 + 6521255^2 .

It is a cyclic number.

It is not a de Polignac number, because 115715373516181 - 2¹⁷ = 115715373385109 is a prime.

It is a super-2 number, since 2×115715373516181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115715373516101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57857686758090 + 57857686758091.

It is an arithmetic number, because the mean of its divisors is an integer number (57857686758091).

Almost surely, 2^{115715373516181} is an apocalyptic number.

It is an amenable number.

115715373516181 is a deficient number, since it is larger than the sum of its proper divisors (1).

115715373516181 is an equidigital number, since it uses as much as digits as its factorization.

115715373516181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646000, while the sum is 55.

The spelling of 115715373516181 in words is "one hundred fifteen trillion, seven hundred fifteen billion, three hundred seventy-three million, five hundred sixteen thousand, one hundred eighty-one".