12918774699 has 8 divisors (see below), whose sum is σ = 19138925520. Its totient is φ = 8612516448.

The previous prime is 12918774689. The next prime is 12918774749. The reversal of 12918774699 is 99647781921.

12918774699 is a `hidden beast` number, since 1 + 2 + 91 + 87 + 7 + 469 + 9 = 666.

It is not a de Polignac number, because 12918774699 - 2⁵ = 12918774667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12918774629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239236542 + ... + 239236595.

It is an arithmetic number, because the mean of its divisors is an integer number (2392365690).

Almost surely, 2^12918774699 is an apocalyptic number.

12918774699 is a deficient number, since it is larger than the sum of its proper divisors (6220150821).

12918774699 is an equidigital number, since it uses as much as digits as its factorization.

12918774699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478473146 (or 478473140 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 63.

The spelling of 12918774699 in words is "twelve billion, nine hundred eighteen million, seven hundred seventy-four thousand, six hundred ninety-nine".