12686870412 has 18 divisors (see below), whose sum is σ = 32069589188. Its totient is φ = 4228956792.

The previous prime is 12686870401. The next prime is 12686870431. The reversal of 12686870412 is 21407868621.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 176206498 + ... + 176206569.

Almost surely, 2^12686870412 is an apocalyptic number.

12686870412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12686870412 is an abundant number, since it is smaller than the sum of its proper divisors (19382718776).

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

12686870412 is a wasteful number, since it uses less digits than its factorization.

12686870412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352413077 (or 352413072 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 12686870412 in words is "twelve billion, six hundred eighty-six million, eight hundred seventy thousand, four hundred twelve".