115235126665 has 4 divisors (see below), whose sum is σ = 138282152004. Its totient is φ = 92188101328.

The previous prime is 115235126623. The next prime is 115235126701. The reversal of 115235126665 is 566621532511.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68767719696 + 46467406969 = 262236^2 + 215563^2 .

It is a cyclic number.

It is not a de Polignac number, because 115235126665 - 2¹⁷ = 115234995593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 11523512662 + ... + 11523512671.

It is an arithmetic number, because the mean of its divisors is an integer number (34570538001).

Almost surely, 2^115235126665 is an apocalyptic number.

It is an amenable number.

115235126665 is a deficient number, since it is larger than the sum of its proper divisors (23047025339).

115235126665 is an equidigital number, since it uses as much as digits as its factorization.

115235126665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23047025338.

The product of its digits is 324000, while the sum is 43.

The spelling of 115235126665 in words is "one hundred fifteen billion, two hundred thirty-five million, one hundred twenty-six thousand, six hundred sixty-five".