9045566726566 has 4 divisors (see below), whose sum is σ = 13568350089852. Its totient is φ = 4522783363282.

The previous prime is 9045566726561. The next prime is 9045566726569. The reversal of 9045566726566 is 6656276655409.

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

It is a super-2 number, since 2×9045566726566² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9045566726561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2261391681640 + ... + 2261391681643.

It is an arithmetic number, because the mean of its divisors is an integer number (3392087522463).

Almost surely, 2^{9045566726566} is an apocalyptic number.

9045566726566 is a deficient number, since it is larger than the sum of its proper divisors (4522783363286).

9045566726566 is a wasteful number, since it uses less digits than its factorization.

9045566726566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4522783363285.

The product of its (nonzero) digits is 489888000, while the sum is 67.

The spelling of 9045566726566 in words is "nine trillion, forty-five billion, five hundred sixty-six million, seven hundred twenty-six thousand, five hundred sixty-six".