8256555980244 has 144 divisors (see below), whose sum is σ = 24540144108480. Its totient is φ = 2307578757120.

The previous prime is 8256555980243. The next prime is 8256555980261. The reversal of 8256555980244 is 4420895556528.

8256555980244 is a `hidden beast` number, since 8 + 2 + 56 + 5 + 559 + 8 + 0 + 24 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8256555980243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5435092 + ... + 6786260.

It is an arithmetic number, because the mean of its divisors is an integer number (170417667420).

Almost surely, 2^{8256555980244} 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 8256555980244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12270072054240).

8256555980244 is an abundant number, since it is smaller than the sum of its proper divisors (16283588128236).

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

8256555980244 is a wasteful number, since it uses less digits than its factorization.

8256555980244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352390 (or 1352385 counting only the distinct ones).

The product of its (nonzero) digits is 138240000, while the sum is 63.

The spelling of 8256555980244 in words is "eight trillion, two hundred fifty-six billion, five hundred fifty-five million, nine hundred eighty thousand, two hundred forty-four".