115666061554949 has 2 divisors, whose sum is σ = 115666061554950. Its totient is φ = 115666061554948.

The previous prime is 115666061554907. The next prime is 115666061555159. The reversal of 115666061554949 is 949455160666511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103347190024324 + 12318871530625 = 10165982^2 + 3509825^2 .

It is a cyclic number.

It is not a de Polignac number, because 115666061554949 - 2⁴⁰ = 114566549927173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115666061556949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57833030777474 + 57833030777475.

It is an arithmetic number, because the mean of its divisors is an integer number (57833030777475).

Almost surely, 2^{115666061554949} is an apocalyptic number.

It is an amenable number.

115666061554949 is a deficient number, since it is larger than the sum of its proper divisors (1).

115666061554949 is an equidigital number, since it uses as much as digits as its factorization.

115666061554949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952000, while the sum is 68.

The spelling of 115666061554949 in words is "one hundred fifteen trillion, six hundred sixty-six billion, sixty-one million, five hundred fifty-four thousand, nine hundred forty-nine".