2666440042 has 16 divisors (see below), whose sum is σ = 4604408640. Its totient is φ = 1134417888.

The previous prime is 2666440037. The next prime is 2666440093. The reversal of 2666440042 is 2400446662.

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 7 ways as a sum of consecutive naturals, for example, 693192 + ... + 697027.

It is an arithmetic number, because the mean of its divisors is an integer number (287775540).

Almost surely, 2^2666440042 is an apocalyptic number.

2666440042 is a deficient number, since it is larger than the sum of its proper divisors (1937968598).

2666440042 is a wasteful number, since it uses less digits than its factorization.

2666440042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390365.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 2666440042 is about 51637.5836189108. The cubic root of 2666440042 is about 1386.6832643965.

The spelling of 2666440042 in words is "two billion, six hundred sixty-six million, four hundred forty thousand, forty-two".