20440431430441 has 8 divisors (see below), whose sum is σ = 22298686944768. Its totient is φ = 18582181662000.

The previous prime is 20440431430421. The next prime is 20440431430553. The reversal of 20440431430441 is 14403413404402.

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

It is not a de Polignac number, because 20440431430441 - 2⁷ = 20440431430313 is a prime.

It is a super-2 number, since 2×20440431430441² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20440431430397 and 20440431430406.

It is not an unprimeable number, because it can be changed into a prime (20440431430411) 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, 9873336 + ... + 11762806.

It is an arithmetic number, because the mean of its divisors is an integer number (2787335868096).

Almost surely, 2^{20440431430441} is an apocalyptic number.

It is an amenable number.

20440431430441 is a deficient number, since it is larger than the sum of its proper divisors (1858255514327).

20440431430441 is a wasteful number, since it uses less digits than its factorization.

20440431430441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872943.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 20440431430441 its reverse (14403413404402), we get a palindrome (34843844834843).

The spelling of 20440431430441 in words is "twenty trillion, four hundred forty billion, four hundred thirty-one million, four hundred thirty thousand, four hundred forty-one".