20424000424420 has 48 divisors (see below), whose sum is σ = 42923286020160. Its totient is φ = 8163337540736.

The previous prime is 20424000424409. The next prime is 20424000424433. The reversal of 20424000424420 is 2442400042402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323240391 + ... + 323303569.

It is an arithmetic number, because the mean of its divisors is an integer number (894235125420).

Almost surely, 2^{20424000424420} is an apocalyptic number.

20424000424420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20424000424420 is an abundant number, since it is smaller than the sum of its proper divisors (22499285595740).

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

20424000424420 is a wasteful number, since it uses less digits than its factorization.

20424000424420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75324 (or 75322 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20424000424420 its reverse (2442400042402), we get a palindrome (22866400466822).

The spelling of 20424000424420 in words is "twenty trillion, four hundred twenty-four billion, four hundred twenty-four thousand, four hundred twenty".