2666381672 has 32 divisors (see below), whose sum is σ = 5164953600. Its totient is φ = 1289131200.

The previous prime is 2666381639. The next prime is 2666381681. The reversal of 2666381672 is 2761836662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361154 + ... + 368462.

It is an arithmetic number, because the mean of its divisors is an integer number (161404800).

Almost surely, 2^2666381672 is an apocalyptic number.

It is an amenable number.

2666381672 is a deficient number, since it is larger than the sum of its proper divisors (2498571928).

2666381672 is a wasteful number, since it uses less digits than its factorization.

2666381672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8817 (or 8813 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 2666381672 is about 51637.0184267062. The cubic root of 2666381672 is about 1386.6731458750.

The spelling of 2666381672 in words is "two billion, six hundred sixty-six million, three hundred eighty-one thousand, six hundred seventy-two".