115866678077 has 2 divisors, whose sum is σ = 115866678078. Its totient is φ = 115866678076.

The previous prime is 115866678071. The next prime is 115866678089. The reversal of 115866678077 is 770876668511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112020073636 + 3846604441 = 334694^2 + 62021^2 .

It is a cyclic number.

It is not a de Polignac number, because 115866678077 - 2⁶ = 115866678013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115866678071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57933339038 + 57933339039.

It is an arithmetic number, because the mean of its divisors is an integer number (57933339039).

Almost surely, 2^115866678077 is an apocalyptic number.

It is an amenable number.

115866678077 is a deficient number, since it is larger than the sum of its proper divisors (1).

115866678077 is an equidigital number, since it uses as much as digits as its factorization.

115866678077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23708160, while the sum is 62.

The spelling of 115866678077 in words is "one hundred fifteen billion, eight hundred sixty-six million, six hundred seventy-eight thousand, seventy-seven".