20555204322 has 16 divisors (see below), whose sum is σ = 43528668192. Its totient is φ = 6448691520.

The previous prime is 20555204309. The next prime is 20555204357. The reversal of 20555204322 is 22340255502.

It is a self number, because there is not a number n which added to its sum of digits gives 20555204322.

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 7 ways as a sum of consecutive naturals, for example, 100760704 + ... + 100760907.

It is an arithmetic number, because the mean of its divisors is an integer number (2720541762).

Almost surely, 2^20555204322 is an apocalyptic number.

20555204322 is an abundant number, since it is smaller than the sum of its proper divisors (22973463870).

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

20555204322 is a wasteful number, since it uses less digits than its factorization.

20555204322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201521633.

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 20555204322 its reverse (22340255502), we get a palindrome (42895459824).

The spelling of 20555204322 in words is "twenty billion, five hundred fifty-five million, two hundred four thousand, three hundred twenty-two".