2688563734844 has 48 divisors (see below), whose sum is σ = 5598221283648. Its totient is φ = 1117105363968.

The previous prime is 2688563734841. The next prime is 2688563734907. The reversal of 2688563734844 is 4484373658862.

It is a super-3 number, since 3×2688563734844³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688563734841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66096227 + ... + 66136890.

It is an arithmetic number, because the mean of its divisors is an integer number (116629610076).

Almost surely, 2^{2688563734844} is an apocalyptic number.

It is an amenable number.

2688563734844 is an abundant number, since it is smaller than the sum of its proper divisors (2909657548804).

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

2688563734844 is a wasteful number, since it uses less digits than its factorization.

2688563734844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132233174 (or 132233172 counting only the distinct ones).

The product of its digits is 743178240, while the sum is 68.

The spelling of 2688563734844 in words is "two trillion, six hundred eighty-eight billion, five hundred sixty-three million, seven hundred thirty-four thousand, eight hundred forty-four".