51312330200 has 24 divisors (see below), whose sum is σ = 119301168180. Its totient is φ = 20524932000.

The previous prime is 51312330163. The next prime is 51312330227. The reversal of 51312330200 is 203321315.

51312330200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128280626 + ... + 128281025.

Almost surely, 2^51312330200 is an apocalyptic number.

51312330200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51312330200 is an abundant number, since it is smaller than the sum of its proper divisors (67988837980).

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

51312330200 is a wasteful number, since it uses less digits than its factorization.

51312330200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256561667 (or 256561658 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 51312330200 its reverse (203321315), we get a palindrome (51515651515).

The spelling of 51312330200 in words is "fifty-one billion, three hundred twelve million, three hundred thirty thousand, two hundred".