20334430140 has 48 divisors (see below), whose sum is σ = 57018917760. Its totient is φ = 5414656320.

The previous prime is 20334430079. The next prime is 20334430187. The reversal of 20334430140 is 4103443302.

It is a self number, because there is not a number n which added to its sum of digits gives 20334430140.

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, 203770 + ... + 286689.

It is an arithmetic number, because the mean of its divisors is an integer number (1187894120).

Almost surely, 2^20334430140 is an apocalyptic number.

20334430140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20334430140 is an abundant number, since it is smaller than the sum of its proper divisors (36684487620).

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

20334430140 is a wasteful number, since it uses less digits than its factorization.

20334430140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491162 (or 491160 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20334430140 its reverse (4103443302), we get a palindrome (24437873442).

The spelling of 20334430140 in words is "twenty billion, three hundred thirty-four million, four hundred thirty thousand, one hundred forty".