2044664664 has 64 divisors (see below), whose sum is σ = 6185548800. Its totient is φ = 549825024.

The previous prime is 2044664653. The next prime is 2044664723. The reversal of 2044664664 is 4664664402.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355104 + ... + 360815.

It is an arithmetic number, because the mean of its divisors is an integer number (96649200).

Almost surely, 2^2044664664 is an apocalyptic number.

2044664664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2044664664 is an abundant number, since it is smaller than the sum of its proper divisors (4140884136).

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

2044664664 is a wasteful number, since it uses less digits than its factorization.

2044664664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715952 (or 715948 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The square root of 2044664664 is about 45217.9683754147. The cubic root of 2044664664 is about 1269.2310769049.

The spelling of 2044664664 in words is "two billion, forty-four million, six hundred sixty-four thousand, six hundred sixty-four".