12609443784 has 64 divisors (see below), whose sum is σ = 37923148800. Its totient is φ = 3413081664.

The previous prime is 12609443753. The next prime is 12609443807. The reversal of 12609443784 is 48734490621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971972 + ... + 1978355.

It is an arithmetic number, because the mean of its divisors is an integer number (592549200).

Almost surely, 2^12609443784 is an apocalyptic number.

12609443784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12609443784 is an abundant number, since it is smaller than the sum of its proper divisors (25313705016).

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

12609443784 is a wasteful number, since it uses less digits than its factorization.

12609443784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3950362 (or 3950358 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 12609443784 in words is "twelve billion, six hundred nine million, four hundred forty-three thousand, seven hundred eighty-four".