20045450444 has 6 divisors (see below), whose sum is σ = 35079538284. Its totient is φ = 10022725220.

The previous prime is 20045450417. The next prime is 20045450449. The reversal of 20045450444 is 44405454002.

It is a self number, because there is not a number n which added to its sum of digits gives 20045450444.

It is not an unprimeable number, because it can be changed into a prime (20045450449) 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 as a sum of consecutive naturals, namely, 2505681302 + ... + 2505681309.

It is an arithmetic number, because the mean of its divisors is an integer number (5846589714).

Almost surely, 2^20045450444 is an apocalyptic number.

It is an amenable number.

20045450444 is a deficient number, since it is larger than the sum of its proper divisors (15034087840).

20045450444 is a wasteful number, since it uses less digits than its factorization.

20045450444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011362615 (or 5011362613 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

The spelling of 20045450444 in words is "twenty billion, forty-five million, four hundred fifty thousand, four hundred forty-four".