20056220324547 has 32 divisors (see below), whose sum is σ = 29470128652800. Its totient is φ = 12031938597120.

The previous prime is 20056220324531. The next prime is 20056220324551. The reversal of 20056220324547 is 74542302265002.

It is a happy number.

It is not a de Polignac number, because 20056220324547 - 2⁴ = 20056220324531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20056220324499 and 20056220324508.

It is not an unprimeable number, because it can be changed into a prime (20056220329547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5996922 + ... + 8722127.

It is an arithmetic number, because the mean of its divisors is an integer number (920941520400).

Almost surely, 2^{20056220324547} is an apocalyptic number.

20056220324547 is a deficient number, since it is larger than the sum of its proper divisors (9413908328253).

20056220324547 is a wasteful number, since it uses less digits than its factorization.

20056220324547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14719483.

The product of its (nonzero) digits is 806400, while the sum is 42.

Adding to 20056220324547 its reverse (74542302265002), we get a palindrome (94598522589549).

The spelling of 20056220324547 in words is "twenty trillion, fifty-six billion, two hundred twenty million, three hundred twenty-four thousand, five hundred forty-seven".