20334341440 has 84 divisors (see below), whose sum is σ = 56326687956. Its totient is φ = 6971768832.

The previous prime is 20334341431. The next prime is 20334341441. The reversal of 20334341440 is 4414343302.

It can be written as a sum of positive squares in 2 ways, for example, as 11961359424 + 8372982016 = 109368^2 + 91504^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 20334341399 and 20334341408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334341441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632737 + ... + 664096.

It is an arithmetic number, because the mean of its divisors is an integer number (670555809).

Almost surely, 2^20334341440 is an apocalyptic number.

20334341440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20334341440 is an abundant number, since it is smaller than the sum of its proper divisors (35992346516).

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

20334341440 is a wasteful number, since it uses less digits than its factorization.

20334341440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296864 (or 1296847 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20334341440 its reverse (4414343302), we get a palindrome (24748684742).

The spelling of 20334341440 in words is "twenty billion, three hundred thirty-four million, three hundred forty-one thousand, four hundred forty".