12990959616 has 104 divisors (see below), whose sum is σ = 34712802720. Its totient is φ = 4321017856.

The previous prime is 12990959551. The next prime is 12990959647. The reversal of 12990959616 is 61695909921.

It is a congruent number.

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, 8023255 + ... + 8024873.

Almost surely, 2^12990959616 is an apocalyptic number.

12990959616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12990959616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17356401360).

12990959616 is an abundant number, since it is smaller than the sum of its proper divisors (21721843104).

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

12990959616 is an equidigital number, since it uses as much as digits as its factorization.

12990959616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 57.

The spelling of 12990959616 in words is "twelve billion, nine hundred ninety million, nine hundred fifty-nine thousand, six hundred sixteen".