20020105066 has 32 divisors (see below), whose sum is σ = 32453422848. Its totient is φ = 9207760320.

The previous prime is 20020105013. The next prime is 20020105067. The reversal of 20020105066 is 66050102002.

It is not an unprimeable number, because it can be changed into a prime (20020105067) 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 in 15 ways as a sum of consecutive naturals, for example, 16262671 + ... + 16263901.

It is an arithmetic number, because the mean of its divisors is an integer number (1014169464).

Almost surely, 2^20020105066 is an apocalyptic number.

20020105066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20020105066 is a deficient number, since it is larger than the sum of its proper divisors (12433317782).

20020105066 is a wasteful number, since it uses less digits than its factorization.

20020105066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20020105066 its reverse (66050102002), we get a palindrome (86070207068).

The spelling of 20020105066 in words is "twenty billion, twenty million, one hundred five thousand, sixty-six".