2659521326616 has 1536 divisors, whose sum is σ = 10102977331200. Its totient is φ = 616475059200.

The previous prime is 2659521326603. The next prime is 2659521326617. The reversal of 2659521326616 is 6166231259562.

2659521326616 is a `hidden beast` number, since 2 + 6 + 5 + 9 + 5 + 2 + 13 + 2 + 6 + 616 = 666.

It is a super-2 number, since 2×2659521326616² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2659521326617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 20941112745 + ... + 20941112871.

It is an arithmetic number, because the mean of its divisors is an integer number (6577459200).

Almost surely, 2^{2659521326616} 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 2659521326616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5051488665600).

2659521326616 is an abundant number, since it is smaller than the sum of its proper divisors (7443456004584).

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

2659521326616 is a wasteful number, since it uses less digits than its factorization.

2659521326616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 253 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 54.

The spelling of 2659521326616 in words is "two trillion, six hundred fifty-nine billion, five hundred twenty-one million, three hundred twenty-six thousand, six hundred sixteen".