2665644442 has 8 divisors (see below), whose sum is σ = 4004255232. Its totient is φ = 1330892700.

The previous prime is 2665644431. The next prime is 2665644451. The reversal of 2665644442 is 2444465662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963034 + ... + 965797.

It is an arithmetic number, because the mean of its divisors is an integer number (500531904).

Almost surely, 2^2665644442 is an apocalyptic number.

2665644442 is a deficient number, since it is larger than the sum of its proper divisors (1338610790).

2665644442 is a wasteful number, since it uses less digits than its factorization.

2665644442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929524.

The product of its digits is 1105920, while the sum is 43.

The square root of 2665644442 is about 51629.8793529483. The cubic root of 2665644442 is about 1386.5453333057.

The spelling of 2665644442 in words is "two billion, six hundred sixty-five million, six hundred forty-four thousand, four hundred forty-two".