115516419181 has 2 divisors, whose sum is σ = 115516419182. Its totient is φ = 115516419180.

The previous prime is 115516419163. The next prime is 115516419209. The reversal of 115516419181 is 181914615511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108708684100 + 6807735081 = 329710^2 + 82509^2 .

It is a cyclic number.

It is not a de Polignac number, because 115516419181 - 2⁹ = 115516418669 is a prime.

It is a super-2 number, since 2×115516419181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115516419121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57758209590 + 57758209591.

It is an arithmetic number, because the mean of its divisors is an integer number (57758209591).

Almost surely, 2^115516419181 is an apocalyptic number.

It is an amenable number.

115516419181 is a deficient number, since it is larger than the sum of its proper divisors (1).

115516419181 is an equidigital number, since it uses as much as digits as its factorization.

115516419181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 43.

The spelling of 115516419181 in words is "one hundred fifteen billion, five hundred sixteen million, four hundred nineteen thousand, one hundred eighty-one".