20442222442040 has 64 divisors (see below), whose sum is σ = 52569255605760. Its totient is φ = 7008289879680.

The previous prime is 20442222442027. The next prime is 20442222442043. The reversal of 20442222442040 is 4024422224402.

It is a junction number, because it is equal to n+sod(n) for n = 20442222441988 and 20442222442006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442222442043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1718069 + ... + 6620891.

It is an arithmetic number, because the mean of its divisors is an integer number (821394618840).

Almost surely, 2^{20442222442040} is an apocalyptic number.

20442222442040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20442222442040 is an abundant number, since it is smaller than the sum of its proper divisors (32127033163720).

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

20442222442040 is a wasteful number, since it uses less digits than its factorization.

20442222442040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917732 (or 4917728 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 20442222442040 its reverse (4024422224402), we get a palindrome (24466644666442).

The spelling of 20442222442040 in words is "twenty trillion, four hundred forty-two billion, two hundred twenty-two million, four hundred forty-two thousand, forty".