20204445206 has 36 divisors (see below), whose sum is σ = 33777027396. Its totient is φ = 9057454560.

The previous prime is 20204445199. The next prime is 20204445229. The reversal of 20204445206 is 60254440202.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 1281785 + ... + 1297451.

It is an arithmetic number, because the mean of its divisors is an integer number (938250761).

Almost surely, 2^20204445206 is an apocalyptic number.

20204445206 is a deficient number, since it is larger than the sum of its proper divisors (13572582190).

20204445206 is a wasteful number, since it uses less digits than its factorization.

20204445206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15837 (or 15753 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 20204445206 its reverse (60254440202), we get a palindrome (80458885408).

The spelling of 20204445206 in words is "twenty billion, two hundred four million, four hundred forty-five thousand, two hundred six".