2066623571443 has 4 divisors (see below), whose sum is σ = 2078569372608. Its totient is φ = 2054677770280.

The previous prime is 2066623571423. The next prime is 2066623571459. The reversal of 2066623571443 is 3441753266602.

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 2066623571443 - 2⁹ = 2066623570931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066623571413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5972900323 + ... + 5972900668.

It is an arithmetic number, because the mean of its divisors is an integer number (519642343152).

Almost surely, 2^{2066623571443} is an apocalyptic number.

2066623571443 is a deficient number, since it is larger than the sum of its proper divisors (11945801165).

2066623571443 is a wasteful number, since it uses less digits than its factorization.

2066623571443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11945801164.

The product of its (nonzero) digits is 4354560, while the sum is 49.

The spelling of 2066623571443 in words is "two trillion, sixty-six billion, six hundred twenty-three million, five hundred seventy-one thousand, four hundred forty-three".