20044242202440 has 32 divisors (see below), whose sum is σ = 60132726607680. Its totient is φ = 5345131253952.

The previous prime is 20044242202421. The next prime is 20044242202463. The reversal of 20044242202440 is 4420224244002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20044242202398 and 20044242202407.

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, 83517675724 + ... + 83517675963.

It is an arithmetic number, because the mean of its divisors is an integer number (1879147706490).

Almost surely, 2^{20044242202440} is an apocalyptic number.

20044242202440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20044242202440 is an abundant number, since it is smaller than the sum of its proper divisors (40088484405240).

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

20044242202440 is a wasteful number, since it uses less digits than its factorization.

20044242202440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167035351701 (or 167035351697 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 20044242202440 its reverse (4420224244002), we get a palindrome (24464466446442).

The spelling of 20044242202440 in words is "twenty trillion, forty-four billion, two hundred forty-two million, two hundred two thousand, four hundred forty".