20442104440 has 16 divisors (see below), whose sum is σ = 45994735080. Its totient is φ = 8176841760.

The previous prime is 20442104407. The next prime is 20442104443. The reversal of 20442104440 is 4440124402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442104443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255526266 + ... + 255526345.

Almost surely, 2^20442104440 is an apocalyptic number.

20442104440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20442104440 is an abundant number, since it is smaller than the sum of its proper divisors (25552630640).

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

20442104440 is a wasteful number, since it uses less digits than its factorization.

20442104440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511052622 (or 511052618 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 20442104440 its reverse (4440124402), we get a palindrome (24882228842).

The spelling of 20442104440 in words is "twenty billion, four hundred forty-two million, one hundred four thousand, four hundred forty".