12551323112016 has 160 divisors (see below), whose sum is σ = 37024534861440. Its totient is φ = 3631979077632.

The previous prime is 12551323112011. The next prime is 12551323112023. The reversal of 12551323112016 is 61021132315521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551323112011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2239405 + ... + 5487948.

It is an arithmetic number, because the mean of its divisors is an integer number (231403342884).

Almost surely, 2^{12551323112016} is an apocalyptic number.

12551323112016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12551323112016 is an abundant number, since it is smaller than the sum of its proper divisors (24473211749424).

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

12551323112016 is a wasteful number, since it uses less digits than its factorization.

12551323112016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7727533 (or 7727527 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

Adding to 12551323112016 its reverse (61021132315521), we get a palindrome (73572455427537).

The spelling of 12551323112016 in words is "twelve trillion, five hundred fifty-one billion, three hundred twenty-three million, one hundred twelve thousand, sixteen".