20042443443 has 8 divisors (see below), whose sum is σ = 29152645056. Its totient is φ = 12146935400.

The previous prime is 20042443439. The next prime is 20042443481. The reversal of 20042443443 is 34434424002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20042443443 - 2² = 20042443439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20042443443.

It is not an unprimeable number, because it can be changed into a prime (20042443433) 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, 303673353 + ... + 303673418.

It is an arithmetic number, because the mean of its divisors is an integer number (3644080632).

Almost surely, 2^20042443443 is an apocalyptic number.

20042443443 is a deficient number, since it is larger than the sum of its proper divisors (9110201613).

20042443443 is a wasteful number, since it uses less digits than its factorization.

20042443443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607346785.

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 20042443443 its reverse (34434424002), we get a palindrome (54476867445).

The spelling of 20042443443 in words is "twenty billion, forty-two million, four hundred forty-three thousand, four hundred forty-three".