20310454556223 has 16 divisors (see below), whose sum is σ = 29166482286816. Its totient is φ = 12497561550720.

The previous prime is 20310454556213. The next prime is 20310454556243. The reversal of 20310454556223 is 32265545401302.

It is not a de Polignac number, because 20310454556223 - 2³² = 20306159588927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310454556213) 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, 24158808 + ... + 24985373.

It is an arithmetic number, because the mean of its divisors is an integer number (1822905142926).

Almost surely, 2^{20310454556223} is an apocalyptic number.

20310454556223 is a deficient number, since it is larger than the sum of its proper divisors (8856027730593).

20310454556223 is a wasteful number, since it uses less digits than its factorization.

20310454556223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49154794.

The product of its (nonzero) digits is 864000, while the sum is 42.

Adding to 20310454556223 its reverse (32265545401302), we get a palindrome (52575999957525).

The spelling of 20310454556223 in words is "twenty trillion, three hundred ten billion, four hundred fifty-four million, five hundred fifty-six thousand, two hundred twenty-three".