12117513071085 has 32 divisors (see below), whose sum is σ = 20281429893888. Its totient is φ = 6166272076800.

The previous prime is 12117513071033. The next prime is 12117513071119. The reversal of 12117513071085 is 58017031571121.

It is a happy number.

It is not a de Polignac number, because 12117513071085 - 2³³ = 12108923136493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43656202 + ... + 43932891.

It is an arithmetic number, because the mean of its divisors is an integer number (633794684184).

Almost surely, 2^{12117513071085} is an apocalyptic number.

12117513071085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12117513071085 is a deficient number, since it is larger than the sum of its proper divisors (8163916822803).

12117513071085 is a wasteful number, since it uses less digits than its factorization.

12117513071085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87589525.

The product of its (nonzero) digits is 58800, while the sum is 42.

The spelling of 12117513071085 in words is "twelve trillion, one hundred seventeen billion, five hundred thirteen million, seventy-one thousand, eighty-five".