12018912917 has 16 divisors (see below), whose sum is σ = 13568273280. Its totient is φ = 10545931200.

The previous prime is 12018912911. The next prime is 12018912953. The reversal of 12018912917 is 71921981021.

It is a de Polignac number, because none of the positive numbers 2^k-12018912917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018912911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1457867 + ... + 1466087.

It is an arithmetic number, because the mean of its divisors is an integer number (848017080).

Almost surely, 2^12018912917 is an apocalyptic number.

It is an amenable number.

12018912917 is a deficient number, since it is larger than the sum of its proper divisors (1549360363).

12018912917 is a wasteful number, since it uses less digits than its factorization.

12018912917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12844.

The product of its (nonzero) digits is 18144, while the sum is 41.

The spelling of 12018912917 in words is "twelve billion, eighteen million, nine hundred twelve thousand, nine hundred seventeen".