20542211443 has 16 divisors (see below), whose sum is σ = 23562342720. Its totient is φ = 17846594688.

The previous prime is 20542211441. The next prime is 20542211453. The reversal of 20542211443 is 34411224502.

It is not a de Polignac number, because 20542211443 - 2¹ = 20542211441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20542211441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237655 + ... + 312352.

It is an arithmetic number, because the mean of its divisors is an integer number (1472646420).

Almost surely, 2^20542211443 is an apocalyptic number.

20542211443 is a deficient number, since it is larger than the sum of its proper divisors (3020131277).

20542211443 is an equidigital number, since it uses as much as digits as its factorization.

20542211443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550063 (or 550037 counting only the distinct ones).

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

Adding to 20542211443 its reverse (34411224502), we get a palindrome (54953435945).

The spelling of 20542211443 in words is "twenty billion, five hundred forty-two million, two hundred eleven thousand, four hundred forty-three".