2666342664643 has 8 divisors (see below), whose sum is σ = 3179737836288. Its totient is φ = 2186069762184.

The previous prime is 2666342664619. The next prime is 2666342664659. The reversal of 2666342664643 is 3464662436662.

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

It is not a de Polignac number, because 2666342664643 - 2²⁹ = 2665805793731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666342664673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8280567121 + ... + 8280567442.

It is an arithmetic number, because the mean of its divisors is an integer number (397467229536).

Almost surely, 2^{2666342664643} is an apocalyptic number.

2666342664643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2666342664643 is a deficient number, since it is larger than the sum of its proper divisors (513395171645).

2666342664643 is a wasteful number, since it uses less digits than its factorization.

2666342664643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16561134593.

The product of its digits is 107495424, while the sum is 58.

The spelling of 2666342664643 in words is "two trillion, six hundred sixty-six billion, three hundred forty-two million, six hundred sixty-four thousand, six hundred forty-three".