12618047616 has 32 divisors (see below), whose sum is σ = 33516690000. Its totient is φ = 4206015744.

The previous prime is 12618047599. The next prime is 12618047621. The reversal of 12618047616 is 61674081621.

It is a tau number, because it is divible by the number of its divisors (32).

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, 16429366 + ... + 16430133.

Almost surely, 2^12618047616 is an apocalyptic number.

12618047616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12618047616 is an abundant number, since it is smaller than the sum of its proper divisors (20898642384).

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

12618047616 is an equidigital number, since it uses as much as digits as its factorization.

12618047616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32859516 (or 32859504 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 12618047616 in words is "twelve billion, six hundred eighteen million, forty-seven thousand, six hundred sixteen".