20441205406 has 8 divisors (see below), whose sum is σ = 31119447240. Its totient is φ = 10068056328.

The previous prime is 20441205397. The next prime is 20441205427. The reversal of 20441205406 is 60450214402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76273021 + ... + 76273288.

It is an arithmetic number, because the mean of its divisors is an integer number (3889930905).

Almost surely, 2^20441205406 is an apocalyptic number.

20441205406 is a deficient number, since it is larger than the sum of its proper divisors (10678241834).

20441205406 is a wasteful number, since it uses less digits than its factorization.

20441205406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152546378.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 20441205406 its reverse (60450214402), we get a palindrome (80891419808).

The spelling of 20441205406 in words is "twenty billion, four hundred forty-one million, two hundred five thousand, four hundred six".