2663841373256 has 128 divisors (see below), whose sum is σ = 6184180224000. Its totient is φ = 1049795085312.

The previous prime is 2663841373253. The next prime is 2663841373309. The reversal of 2663841373256 is 6523731483662.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (2663841373253) 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, 9009905 + ... + 9300863.

It is an arithmetic number, because the mean of its divisors is an integer number (48313908000).

Almost surely, 2^{2663841373256} 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 2663841373256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3092090112000).

2663841373256 is an abundant number, since it is smaller than the sum of its proper divisors (3520338850744).

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

2663841373256 is a wasteful number, since it uses less digits than its factorization.

2663841373256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291211 (or 291207 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 56.

The spelling of 2663841373256 in words is "two trillion, six hundred sixty-three billion, eight hundred forty-one million, three hundred seventy-three thousand, two hundred fifty-six".