20343202402304 has 52 divisors (see below), whose sum is σ = 40725236388660. Its totient is φ = 10160650321920.

The previous prime is 20343202402283. The next prime is 20343202402307. The reversal of 20343202402304 is 40320420234302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2293891993600 + 18049310408704 = 1514560^2 + 4248448^2 .

It is a super-2 number, since 2×20343202402304² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343202402307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132094 + ... + 6478274.

Almost surely, 2^{20343202402304} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20343202402304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20362618194330).

20343202402304 is an abundant number, since it is smaller than the sum of its proper divisors (20382033986356).

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

20343202402304 is an frugal number, since it uses more digits than its factorization.

20343202402304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5347134 (or 5347112 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 20343202402304 its reverse (40320420234302), we get a palindrome (60663622636606).

The spelling of 20343202402304 in words is "twenty trillion, three hundred forty-three billion, two hundred two million, four hundred two thousand, three hundred four".