12818766474 has 24 divisors (see below), whose sum is σ = 27810520452. Its totient is φ = 4267302720.

The previous prime is 12818766437. The next prime is 12818766487. The reversal of 12818766474 is 47466781821.

12818766474 is a `hidden beast` number, since 12 + 81 + 87 + 6 + 6 + 474 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9436762449 + 3382004025 = 97143^2 + 58155^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12818766474.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454209 + ... + 481604.

Almost surely, 2^12818766474 is an apocalyptic number.

12818766474 is an abundant number, since it is smaller than the sum of its proper divisors (14991753978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12818766474 is a wasteful number, since it uses less digits than its factorization.

12818766474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936582 (or 936579 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The spelling of 12818766474 in words is "twelve billion, eight hundred eighteen million, seven hundred sixty-six thousand, four hundred seventy-four".