115447026889 has 4 divisors (see below), whose sum is σ = 116221839300. Its totient is φ = 114672214480.

The previous prime is 115447026881. The next prime is 115447026899. The reversal of 115447026889 is 988620744511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988620744511 = 61 ⋅16206897451.

It can be written as a sum of positive squares in 2 ways, for example, as 12380345289 + 103066681600 = 111267^2 + 321040^2 .

It is a cyclic number.

It is not a de Polignac number, because 115447026889 - 2³ = 115447026881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115447026881) 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 in 3 ways as a sum of consecutive naturals, for example, 387405982 + ... + 387406279.

It is an arithmetic number, because the mean of its divisors is an integer number (29055459825).

Almost surely, 2^115447026889 is an apocalyptic number.

It is an amenable number.

115447026889 is a deficient number, since it is larger than the sum of its proper divisors (774812411).

115447026889 is an equidigital number, since it uses as much as digits as its factorization.

115447026889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774812410.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 115447026889 in words is "one hundred fifteen billion, four hundred forty-seven million, twenty-six thousand, eight hundred eighty-nine".