12718574436 has 12 divisors (see below), whose sum is σ = 29676673712. Its totient is φ = 4239524808.

The previous prime is 12718574413. The next prime is 12718574437. The reversal of 12718574436 is 63447581721.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (12718574437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529940590 + ... + 529940613.

Almost surely, 2^12718574436 is an apocalyptic number.

It is an amenable number.

12718574436 is an abundant number, since it is smaller than the sum of its proper divisors (16958099276).

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

12718574436 is a wasteful number, since it uses less digits than its factorization.

12718574436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059881210 (or 1059881208 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The spelling of 12718574436 in words is "twelve billion, seven hundred eighteen million, five hundred seventy-four thousand, four hundred thirty-six".