20432442042040 has 64 divisors (see below), whose sum is σ = 52554311285760. Its totient is φ = 7003575895680.

The previous prime is 20432442042031. The next prime is 20432442042071. The reversal of 20432442042040 is 4024024423402.

It is a junction number, because it is equal to n+sod(n) for n = 20432442041993 and 20432442042011.

It is a congruent number.

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, 8473506 + ... + 10614385.

It is an arithmetic number, because the mean of its divisors is an integer number (821161113840).

Almost surely, 2^{20432442042040} is an apocalyptic number.

20432442042040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20432442042040 is an abundant number, since it is smaller than the sum of its proper divisors (32121869243720).

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

20432442042040 is a wasteful number, since it uses less digits than its factorization.

20432442042040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19091732 (or 19091728 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 31.

Adding to 20432442042040 its reverse (4024024423402), we get a palindrome (24456466465442).

The spelling of 20432442042040 in words is "twenty trillion, four hundred thirty-two billion, four hundred forty-two million, forty-two thousand, forty".