115912616869978 has 4 divisors (see below), whose sum is σ = 173868925304970. Its totient is φ = 57956308434988.

The previous prime is 115912616869969. The next prime is 115912616870047. The reversal of 115912616869978 is 879968616219511.

115912616869978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80041776812449 + 35870840057529 = 8946607^2 + 5989227^2 .

It is a junction number, because it is equal to n+sod(n) for n = 115912616869898 and 115912616869907.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28978154217493 + ... + 28978154217496.

Almost surely, 2^{115912616869978} is an apocalyptic number.

115912616869978 is a deficient number, since it is larger than the sum of its proper divisors (57956308434992).

115912616869978 is an equidigital number, since it uses as much as digits as its factorization.

115912616869978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57956308434991.

The product of its digits is 705438720, while the sum is 79.

The spelling of 115912616869978 in words is "one hundred fifteen trillion, nine hundred twelve billion, six hundred sixteen million, eight hundred sixty-nine thousand, nine hundred seventy-eight".