12918845385 has 16 divisors (see below), whose sum is σ = 22966836480. Its totient is φ = 6890050800.

The previous prime is 12918845363. The next prime is 12918845393. The reversal of 12918845385 is 58354881921.

12918845385 is a `hidden beast` number, since 1 + 2 + 9 + 188 + 453 + 8 + 5 = 666.

It is not a de Polignac number, because 12918845385 - 2¹⁰ = 12918844361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47847441 + ... + 47847710.

It is an arithmetic number, because the mean of its divisors is an integer number (1435427280).

Almost surely, 2^12918845385 is an apocalyptic number.

12918845385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12918845385 is a deficient number, since it is larger than the sum of its proper divisors (10047991095).

12918845385 is an equidigital number, since it uses as much as digits as its factorization.

12918845385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95695165 (or 95695159 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The spelling of 12918845385 in words is "twelve billion, nine hundred eighteen million, eight hundred forty-five thousand, three hundred eighty-five".