2666442635 has 4 divisors (see below), whose sum is σ = 3199731168. Its totient is φ = 2133154104.

The previous prime is 2666442607. The next prime is 2666442677. The reversal of 2666442635 is 5362446662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2666442635 - 2⁸ = 2666442379 is a prime.

It is a Duffinian number.

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, 266644259 + ... + 266644268.

It is an arithmetic number, because the mean of its divisors is an integer number (799932792).

Almost surely, 2^2666442635 is an apocalyptic number.

2666442635 is a deficient number, since it is larger than the sum of its proper divisors (533288533).

2666442635 is an equidigital number, since it uses as much as digits as its factorization.

2666442635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533288532.

The product of its digits is 1244160, while the sum is 44.

The square root of 2666442635 is about 51637.6087265861. The cubic root of 2666442635 is about 1386.6837138932.

The spelling of 2666442635 in words is "two billion, six hundred sixty-six million, four hundred forty-two thousand, six hundred thirty-five".