20221432461566 has 24 divisors (see below), whose sum is σ = 35284587684840. Its totient is φ = 8666266438032.

The previous prime is 20221432461547. The next prime is 20221432461611. The reversal of 20221432461566 is 66516423412202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14740001 + ... + 16053363.

It is an arithmetic number, because the mean of its divisors is an integer number (1470191153535).

Almost surely, 2^{20221432461566} is an apocalyptic number.

20221432461566 is a deficient number, since it is larger than the sum of its proper divisors (15063155223274).

20221432461566 is a wasteful number, since it uses less digits than its factorization.

20221432461566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470488 (or 1470481 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

Adding to 20221432461566 its reverse (66516423412202), we get a palindrome (86737855873768).

The spelling of 20221432461566 in words is "twenty trillion, two hundred twenty-one billion, four hundred thirty-two million, four hundred sixty-one thousand, five hundred sixty-six".