20442403206 has 12 divisors (see below), whose sum is σ = 44291873652. Its totient is φ = 6814134396.

The previous prime is 20442403123. The next prime is 20442403217. The reversal of 20442403206 is 60230424402.

20442403206 is a `hidden beast` number, since 204 + 424 + 0 + 32 + 0 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20442403206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567844516 + ... + 567844551.

It is an arithmetic number, because the mean of its divisors is an integer number (3690989471).

Almost surely, 2^20442403206 is an apocalyptic number.

20442403206 is an abundant number, since it is smaller than the sum of its proper divisors (23849470446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20442403206 is a wasteful number, since it uses less digits than its factorization.

20442403206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135689075 (or 1135689072 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20442403206 its reverse (60230424402), we get a palindrome (80672827608).

The spelling of 20442403206 in words is "twenty billion, four hundred forty-two million, four hundred three thousand, two hundred six".