43522221566 has 8 divisors (see below), whose sum is σ = 65797374720. Its totient is φ = 21589763328.

The previous prime is 43522221557. The next prime is 43522221601. The reversal of 43522221566 is 66512222534.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85673411 + ... + 85673918.

It is an arithmetic number, because the mean of its divisors is an integer number (8224671840).

Almost surely, 2^43522221566 is an apocalyptic number.

43522221566 is a deficient number, since it is larger than the sum of its proper divisors (22275153154).

43522221566 is a wasteful number, since it uses less digits than its factorization.

43522221566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171347458.

The product of its digits is 172800, while the sum is 38.

The spelling of 43522221566 in words is "forty-three billion, five hundred twenty-two million, two hundred twenty-one thousand, five hundred sixty-six".