12806861412 has 12 divisors (see below), whose sum is σ = 29882676656. Its totient is φ = 4268953800.

The previous prime is 12806861407. The next prime is 12806861437. The reversal of 12806861412 is 21416860821.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533619214 + ... + 533619237.

Almost surely, 2^12806861412 is an apocalyptic number.

12806861412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12806861412 is an abundant number, since it is smaller than the sum of its proper divisors (17075815244).

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

12806861412 is a wasteful number, since it uses less digits than its factorization.

12806861412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067238458 (or 1067238456 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 12806861412 in words is "twelve billion, eight hundred six million, eight hundred sixty-one thousand, four hundred twelve".