51304205204 has 36 divisors (see below), whose sum is σ = 105517450836. Its totient is φ = 21760833024.

The previous prime is 51304205203. The next prime is 51304205207. The reversal of 51304205204 is 40250240315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38580816400 + 12723388804 = 196420^2 + 112798^2 .

It is a super-2 number, since 2×51304205204² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51304205203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1330247 + ... + 1368270.

It is an arithmetic number, because the mean of its divisors is an integer number (2931040301).

Almost surely, 2^51304205204 is an apocalyptic number.

It is an amenable number.

51304205204 is an abundant number, since it is smaller than the sum of its proper divisors (54213245632).

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

51304205204 is a wasteful number, since it uses less digits than its factorization.

51304205204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698632 (or 2698623 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 51304205204 its reverse (40250240315), we get a palindrome (91554445519).

The spelling of 51304205204 in words is "fifty-one billion, three hundred four million, two hundred five thousand, two hundred four".