2666328043 has 4 divisors (see below), whose sum is σ = 2687322880. Its totient is φ = 2645333208.

The previous prime is 2666328029. The next prime is 2666328089. The reversal of 2666328043 is 3408236662.

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 2666328043 - 2²⁹ = 2129457131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2666327987 and 2666328005.

It is not an unprimeable number, because it can be changed into a prime (2666328023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10497228 + ... + 10497481.

It is an arithmetic number, because the mean of its divisors is an integer number (671830720).

Almost surely, 2^2666328043 is an apocalyptic number.

2666328043 is a deficient number, since it is larger than the sum of its proper divisors (20994837).

2666328043 is a wasteful number, since it uses less digits than its factorization.

2666328043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20994836.

The product of its (nonzero) digits is 248832, while the sum is 40.

The square root of 2666328043 is about 51636.4991357857. The cubic root of 2666328043 is about 1386.6638490823.

The spelling of 2666328043 in words is "two billion, six hundred sixty-six million, three hundred twenty-eight thousand, forty-three".