20330434440 has 96 divisors (see below), whose sum is σ = 67060169280. Its totient is φ = 5340525696.

The previous prime is 20330434433. The next prime is 20330434463. The reversal of 20330434440 is 4443403302.

It is a super-2 number, since 2×20330434440² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 397324 + ... + 445563.

It is an arithmetic number, because the mean of its divisors is an integer number (698543430).

Almost surely, 2^20330434440 is an apocalyptic number.

20330434440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330434440 is an abundant number, since it is smaller than the sum of its proper divisors (46729734840).

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

20330434440 is a wasteful number, since it uses less digits than its factorization.

20330434440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842971 (or 842964 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20330434440 its reverse (4443403302), we get a palindrome (24773837742).

The spelling of 20330434440 in words is "twenty billion, three hundred thirty million, four hundred thirty-four thousand, four hundred forty".