2044665776 has 40 divisors (see below), whose sum is σ = 4156754784. Its totient is φ = 972449280.

The previous prime is 2044665773. The next prime is 2044665787. The reversal of 2044665776 is 6775664402.

It is a self number, because there is not a number n which added to its sum of digits gives 2044665776.

It is not an unprimeable number, because it can be changed into a prime (2044665773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51260 + ... + 81956.

Almost surely, 2^2044665776 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 2044665776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2078377392).

2044665776 is an abundant number, since it is smaller than the sum of its proper divisors (2112089008).

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

2044665776 is a wasteful number, since it uses less digits than its factorization.

With its successor (2044665777) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (30903).

With its successor (2044665777) it forms an eRAP, since the sums of their prime factors are consecutive (30909 and 30910).

2044665776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30909 (or 30903 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 47.

The square root of 2044665776 is about 45217.9806714099. The cubic root of 2044665776 is about 1269.2313069972.

The spelling of 2044665776 in words is "two billion, forty-four million, six hundred sixty-five thousand, seven hundred seventy-six".