51233345320 has 32 divisors (see below), whose sum is σ = 119250030600. Its totient is φ = 19786670848.

The previous prime is 51233345311. The next prime is 51233345353. The reversal of 51233345320 is 2354333215.

It can be written as a sum of positive squares in 4 ways, for example, as 29823217636 + 21410127684 = 172694^2 + 146322^2 .

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 7 ways as a sum of consecutive naturals, for example, 22082179 + ... + 22084498.

Almost surely, 2^51233345320 is an apocalyptic number.

It is an amenable number.

51233345320 is an abundant number, since it is smaller than the sum of its proper divisors (68016685280).

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

51233345320 is a wasteful number, since it uses less digits than its factorization.

51233345320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44166717 (or 44166713 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 51233345320 its reverse (2354333215), we get a palindrome (53587678535).

The spelling of 51233345320 in words is "fifty-one billion, two hundred thirty-three million, three hundred forty-five thousand, three hundred twenty".