2665516444 has 6 divisors (see below), whose sum is σ = 4664653784. Its totient is φ = 1332758220.

The previous prime is 2665516421. The next prime is 2665516457. The reversal of 2665516444 is 4446155662.

2665516444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2665516444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333189552 + ... + 333189559.

Almost surely, 2^2665516444 is an apocalyptic number.

It is an amenable number.

2665516444 is a deficient number, since it is larger than the sum of its proper divisors (1999137340).

2665516444 is a wasteful number, since it uses less digits than its factorization.

2665516444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666379115 (or 666379113 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The square root of 2665516444 is about 51628.6397651536. The cubic root of 2665516444 is about 1386.5231400645.

The spelling of 2665516444 in words is "two billion, six hundred sixty-five million, five hundred sixteen thousand, four hundred forty-four".