12551216916 has 144 divisors (see below), whose sum is σ = 36052618560. Its totient is φ = 3379138560.

The previous prime is 12551216903. The next prime is 12551216927. The reversal of 12551216916 is 61961215521.

12551216916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2153286 + ... + 2159106.

Almost surely, 2^12551216916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12551216916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18026309280).

12551216916 is an abundant number, since it is smaller than the sum of its proper divisors (23501401644).

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

12551216916 is a wasteful number, since it uses less digits than its factorization.

12551216916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054 (or 6045 counting only the distinct ones).

The product of its digits is 32400, while the sum is 39.

The spelling of 12551216916 in words is "twelve billion, five hundred fifty-one million, two hundred sixteen thousand, nine hundred sixteen".