20445341111 has 4 divisors (see below), whose sum is σ = 22018059672. Its totient is φ = 18872622552.

The previous prime is 20445341099. The next prime is 20445341117. The reversal of 20445341111 is 11114354402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11114354402 = 2 ⋅5557177201.

It is a cyclic number.

It is not a de Polignac number, because 20445341111 - 2²² = 20441146807 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 (20445341117) 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, 786359261 + ... + 786359286.

It is an arithmetic number, because the mean of its divisors is an integer number (5504514918).

Almost surely, 2^20445341111 is an apocalyptic number.

20445341111 is a deficient number, since it is larger than the sum of its proper divisors (1572718561).

20445341111 is a wasteful number, since it uses less digits than its factorization.

20445341111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572718560.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 20445341111 its reverse (11114354402), we get a palindrome (31559695513).

The spelling of 20445341111 in words is "twenty billion, four hundred forty-five million, three hundred forty-one thousand, one hundred eleven".