20112004445 has 32 divisors (see below), whose sum is σ = 27587679840. Its totient is φ = 13943808000.

The previous prime is 20112004433. The next prime is 20112004477. The reversal of 20112004445 is 54440021102.

It can be written as a sum of positive squares in 16 ways, for example, as 898440676 + 19213563769 = 29974^2 + 138613^2 .

It is not a de Polignac number, because 20112004445 - 2²² = 20107810141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112004445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429695 + ... + 474195.

It is an arithmetic number, because the mean of its divisors is an integer number (862114995).

Almost surely, 2^20112004445 is an apocalyptic number.

It is an amenable number.

20112004445 is a deficient number, since it is larger than the sum of its proper divisors (7475675395).

20112004445 is a wasteful number, since it uses less digits than its factorization.

20112004445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44945.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 20112004445 its reverse (54440021102), we get a palindrome (74552025547).

The spelling of 20112004445 in words is "twenty billion, one hundred twelve million, four thousand, four hundred forty-five".