220423134430444 has 48 divisors (see below), whose sum is σ = 430681420915200. Its totient is φ = 97850601786560.

The previous prime is 220423134430441. The next prime is 220423134430537. The reversal of 220423134430444 is 444034431324022.

It is a junction number, because it is equal to n+sod(n) for n = 220423134430397 and 220423134430406.

It is not an unprimeable number, because it can be changed into a prime (220423134430441) 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, 113153719 + ... + 115085230.

It is an arithmetic number, because the mean of its divisors is an integer number (8972529602400).

Almost surely, 2^{220423134430444} is an apocalyptic number.

It is an amenable number.

220423134430444 is a deficient number, since it is larger than the sum of its proper divisors (210258286484756).

220423134430444 is a wasteful number, since it uses less digits than its factorization.

220423134430444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228239478 (or 228239476 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 40.

Adding to 220423134430444 its reverse (444034431324022), we get a palindrome (664457565754466).

The spelling of 220423134430444 in words is "two hundred twenty trillion, four hundred twenty-three billion, one hundred thirty-four million, four hundred thirty thousand, four hundred forty-four".