20243102404400 has 120 divisors (see below), whose sum is σ = 49133887206144. Its totient is φ = 8014110624000.

The previous prime is 20243102404387. The next prime is 20243102404433. The reversal of 20243102404400 is 440420134202.

It is a happy number.

It is a super-2 number, since 2×20243102404400² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20243102404400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73486925 + ... + 73761875.

Almost surely, 2^{20243102404400} is an apocalyptic number.

20243102404400 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 20243102404400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24566943603072).

20243102404400 is an abundant number, since it is smaller than the sum of its proper divisors (28890784801744).

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

20243102404400 is a wasteful number, since it uses less digits than its factorization.

20243102404400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276859 (or 276848 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20243102404400 its reverse (440420134202), we get a palindrome (20683522538602).

The spelling of 20243102404400 in words is "twenty trillion, two hundred forty-three billion, one hundred two million, four hundred four thousand, four hundred".