20440004004042 has 48 divisors (see below), whose sum is σ = 47857188736800. Its totient is φ = 5802803671392.

The previous prime is 20440004004041. The next prime is 20440004004067. The reversal of 20440004004042 is 24040040004402.

It is not an unprimeable number, because it can be changed into a prime (20440004004041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221367292 + ... + 221459607.

It is an arithmetic number, because the mean of its divisors is an integer number (997024765350).

Almost surely, 2^{20440004004042} is an apocalyptic number.

20440004004042 is an abundant number, since it is smaller than the sum of its proper divisors (27417184732758).

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

20440004004042 is a wasteful number, since it uses less digits than its factorization.

20440004004042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442827075 (or 442827068 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20440004004042 its reverse (24040040004402), we get a palindrome (44480044008444).

The spelling of 20440004004042 in words is "twenty trillion, four hundred forty billion, four million, four thousand, forty-two".