20422424424 has 16 divisors (see below), whose sum is σ = 51056061120. Its totient is φ = 6807474800.

The previous prime is 20422424419. The next prime is 20422424453. The reversal of 20422424424 is 42442422402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20422424391 and 20422424400.

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, 425467152 + ... + 425467199.

It is an arithmetic number, because the mean of its divisors is an integer number (3191003820).

Almost surely, 2^20422424424 is an apocalyptic number.

20422424424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20422424424 is an abundant number, since it is smaller than the sum of its proper divisors (30633636696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20422424424 is a wasteful number, since it uses less digits than its factorization.

20422424424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850934360 (or 850934356 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 20422424424 its reverse (42442422402), we get a palindrome (62864846826).

The spelling of 20422424424 in words is "twenty billion, four hundred twenty-two million, four hundred twenty-four thousand, four hundred twenty-four".