20432331422420 has 48 divisors (see below), whose sum is σ = 43433732684160. Its totient is φ = 8072813444736.

The previous prime is 20432331422387. The next prime is 20432331422473. The reversal of 20432331422420 is 2422413323402.

It is a super-2 number, since 2×20432331422420² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6883766 + ... + 9394194.

It is an arithmetic number, because the mean of its divisors is an integer number (904869430920).

Almost surely, 2^{20432331422420} is an apocalyptic number.

20432331422420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20432331422420 is an abundant number, since it is smaller than the sum of its proper divisors (23001401261740).

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

20432331422420 is a wasteful number, since it uses less digits than its factorization.

20432331422420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515424 (or 2515422 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 20432331422420 its reverse (2422413323402), we get a palindrome (22854744745822).

The spelling of 20432331422420 in words is "twenty trillion, four hundred thirty-two billion, three hundred thirty-one million, four hundred twenty-two thousand, four hundred twenty".