20400334230204 has 96 divisors (see below), whose sum is σ = 53284921536000. Its totient is φ = 6749464900608.

The previous prime is 20400334230187. The next prime is 20400334230223. The reversal of 20400334230204 is 40203243300402.

20400334230204 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 0 + 33 + 423 + 0 + 204 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 8035807 + ... + 10265225.

It is an arithmetic number, because the mean of its divisors is an integer number (555051266000).

Almost surely, 2^{20400334230204} 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 20400334230204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26642460768000).

20400334230204 is an abundant number, since it is smaller than the sum of its proper divisors (32884587305796).

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

20400334230204 is a wasteful number, since it uses less digits than its factorization.

20400334230204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230064 (or 2230056 counting only the distinct ones).

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

Adding to 20400334230204 its reverse (40203243300402), we get a palindrome (60603577530606).

The spelling of 20400334230204 in words is "twenty trillion, four hundred billion, three hundred thirty-four million, two hundred thirty thousand, two hundred four".