20423344204 has 12 divisors (see below), whose sum is σ = 36171465624. Its totient is φ = 10088639744.

The previous prime is 20423344171. The next prime is 20423344217. The reversal of 20423344204 is 40244332402.

It is a happy number.

It is a super-2 number, since 2×20423344204² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30757717 + ... + 30758380.

It is an arithmetic number, because the mean of its divisors is an integer number (3014288802).

Almost surely, 2^20423344204 is an apocalyptic number.

It is an amenable number.

20423344204 is a deficient number, since it is larger than the sum of its proper divisors (15748121420).

20423344204 is a wasteful number, since it uses less digits than its factorization.

20423344204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61516184 (or 61516182 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20423344204 its reverse (40244332402), we get a palindrome (60667676606).

The spelling of 20423344204 in words is "twenty billion, four hundred twenty-three million, three hundred forty-four thousand, two hundred four".