12426551522616 has 256 divisors, whose sum is σ = 39516087582720. Its totient is φ = 3162848832000.

The previous prime is 12426551522597. The next prime is 12426551522621. The reversal of 12426551522616 is 61622515562421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23386126 + ... + 23911586.

It is an arithmetic number, because the mean of its divisors is an integer number (154359717120).

Almost surely, 2^{12426551522616} 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 12426551522616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19758043791360).

12426551522616 is an abundant number, since it is smaller than the sum of its proper divisors (27089536060104).

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

12426551522616 is a wasteful number, since it uses less digits than its factorization.

12426551522616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525746 (or 525742 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 48.

The spelling of 12426551522616 in words is "twelve trillion, four hundred twenty-six billion, five hundred fifty-one million, five hundred twenty-two thousand, six hundred sixteen".