2040644084864 has 512 divisors, whose sum is σ = 5586046156800. Its totient is φ = 718502400000.

The previous prime is 2040644084863. The next prime is 2040644084887. The reversal of 2040644084864 is 4684804460402.

It is not an unprimeable number, because it can be changed into a prime (2040644084863) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 412165589 + ... + 412170539.

It is an arithmetic number, because the mean of its divisors is an integer number (10910246400).

Almost surely, 2^{2040644084864} 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 2040644084864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2793023078400).

2040644084864 is an abundant number, since it is smaller than the sum of its proper divisors (3545402071936).

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

2040644084864 is a wasteful number, since it uses less digits than its factorization.

2040644084864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104 (or 5092 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 50.

The spelling of 2040644084864 in words is "two trillion, forty billion, six hundred forty-four million, eighty-four thousand, eight hundred sixty-four".