20011312433444 has 24 divisors (see below), whose sum is σ = 35055863205888. Its totient is φ = 9995356670400.

The previous prime is 20011312433417. The next prime is 20011312433549. The reversal of 20011312433444 is 44433421311002.

It is a super-2 number, since 2×20011312433444² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20011312433444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14940317 + ... + 16224539.

It is an arithmetic number, because the mean of its divisors is an integer number (1460660966912).

Almost surely, 2^{20011312433444} is an apocalyptic number.

It is an amenable number.

20011312433444 is a deficient number, since it is larger than the sum of its proper divisors (15044550772444).

20011312433444 is a wasteful number, since it uses less digits than its factorization.

20011312433444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288235 (or 1288233 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 20011312433444 its reverse (44433421311002), we get a palindrome (64444733744446).

The spelling of 20011312433444 in words is "twenty trillion, eleven billion, three hundred twelve million, four hundred thirty-three thousand, four hundred forty-four".