20444030071 has 4 divisors (see below), whose sum is σ = 21103514944. Its totient is φ = 19784545200.

The previous prime is 20444030063. The next prime is 20444030129. The reversal of 20444030071 is 17003044402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17003044402 = 2 ⋅8501522201.

It is a cyclic number.

It is not a de Polignac number, because 20444030071 - 2³ = 20444030063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444030371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329742390 + ... + 329742451.

It is an arithmetic number, because the mean of its divisors is an integer number (5275878736).

Almost surely, 2^20444030071 is an apocalyptic number.

20444030071 is a deficient number, since it is larger than the sum of its proper divisors (659484873).

20444030071 is an equidigital number, since it uses as much as digits as its factorization.

20444030071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659484872.

The product of its (nonzero) digits is 2688, while the sum is 25.

Adding to 20444030071 its reverse (17003044402), we get a palindrome (37447074473).

The spelling of 20444030071 in words is "twenty billion, four hundred forty-four million, thirty thousand, seventy-one".