22066045646 has 4 divisors (see below), whose sum is σ = 33099068472. Its totient is φ = 11033022822.

The previous prime is 22066045643. The next prime is 22066045667. The reversal of 22066045646 is 64654066022.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22066045643) by changing a digit.

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 as a sum of consecutive naturals, namely, 5516511410 + ... + 5516511413.

It is an arithmetic number, because the mean of its divisors is an integer number (8274767118).

Almost surely, 2^22066045646 is an apocalyptic number.

22066045646 is a deficient number, since it is larger than the sum of its proper divisors (11033022826).

22066045646 is a wasteful number, since it uses less digits than its factorization.

22066045646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11033022825.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 22066045646 in words is "twenty-two billion, sixty-six million, forty-five thousand, six hundred forty-six".