12078644316 has 24 divisors (see below), whose sum is σ = 28198137744. Its totient is φ = 4024124160.

The previous prime is 12078644311. The next prime is 12078644317. The reversal of 12078644316 is 61344687021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12078644311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237165 + ... + 283556.

It is an arithmetic number, because the mean of its divisors is an integer number (1174922406).

Almost surely, 2^12078644316 is an apocalyptic number.

It is an amenable number.

12078644316 is an abundant number, since it is smaller than the sum of its proper divisors (16119493428).

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

12078644316 is a wasteful number, since it uses less digits than its factorization.

12078644316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522661 (or 522659 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 12078644316 in words is "twelve billion, seventy-eight million, six hundred forty-four thousand, three hundred sixteen".