12609471912 has 32 divisors (see below), whose sum is σ = 31528634400. Its totient is φ = 4202496704.

The previous prime is 12609471899. The next prime is 12609471937. The reversal of 12609471912 is 21917490621.

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, 128914 + ... + 204542.

It is an arithmetic number, because the mean of its divisors is an integer number (985269825).

Almost surely, 2^12609471912 is an apocalyptic number.

12609471912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12609471912 is an abundant number, since it is smaller than the sum of its proper divisors (18919162488).

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

12609471912 is a wasteful number, since it uses less digits than its factorization.

12609471912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82585 (or 82581 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 12609471912 in words is "twelve billion, six hundred nine million, four hundred seventy-one thousand, nine hundred twelve".