20332434111440 has 160 divisors (see below), whose sum is σ = 52265523542400. Its totient is φ = 7294211573760.

The previous prime is 20332434111433. The next prime is 20332434111463. The reversal of 20332434111440 is 4411143423302.

It is a junction number, because it is equal to n+sod(n) for n = 20332434111397 and 20332434111406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51589046 + ... + 51981674.

It is an arithmetic number, because the mean of its divisors is an integer number (326659522140).

Almost surely, 2^{20332434111440} is an apocalyptic number.

20332434111440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20332434111440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26132761771200).

20332434111440 is an abundant number, since it is smaller than the sum of its proper divisors (31933089430960).

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

20332434111440 is a wasteful number, since it uses less digits than its factorization.

20332434111440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393445 (or 393439 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 20332434111440 its reverse (4411143423302), we get a palindrome (24743577534742).

The spelling of 20332434111440 in words is "twenty trillion, three hundred thirty-two billion, four hundred thirty-four million, one hundred eleven thousand, four hundred forty".