20442330204440 has 32 divisors (see below), whose sum is σ = 46863077737680. Its totient is φ = 8022650343552.

The previous prime is 20442330204427. The next prime is 20442330204449. The reversal of 20442330204440 is 4440203324402.

It is a junction number, because it is equal to n+sod(n) for n = 20442330204397 and 20442330204406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442330204449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4821302174 + ... + 4821306413.

Almost surely, 2^{20442330204440} is an apocalyptic number.

20442330204440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20442330204440 is an abundant number, since it is smaller than the sum of its proper divisors (26420747533240).

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

20442330204440 is a wasteful number, since it uses less digits than its factorization.

20442330204440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9642608651 (or 9642608647 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 20442330204440 its reverse (4440203324402), we get a palindrome (24882533528842).

The spelling of 20442330204440 in words is "twenty trillion, four hundred forty-two billion, three hundred thirty million, two hundred four thousand, four hundred forty".