12586556812 has 24 divisors (see below), whose sum is σ = 22448464416. Its totient is φ = 6172777728.

The previous prime is 12586556803. The next prime is 12586556833. The reversal of 12586556812 is 21865568521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1047028 + ... + 1058980.

It is an arithmetic number, because the mean of its divisors is an integer number (935352684).

Almost surely, 2^12586556812 is an apocalyptic number.

It is an amenable number.

12586556812 is a deficient number, since it is larger than the sum of its proper divisors (9861907604).

12586556812 is a wasteful number, since it uses less digits than its factorization.

12586556812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16977 (or 16975 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 49.

The spelling of 12586556812 in words is "twelve billion, five hundred eighty-six million, five hundred fifty-six thousand, eight hundred twelve".