51012120224 has 96 divisors (see below), whose sum is σ = 111410401536. Its totient is φ = 22839321600.

The previous prime is 51012120223. The next prime is 51012120251. The reversal of 51012120224 is 42202121015.

It is a junction number, because it is equal to n+sod(n) for n = 51012120196 and 51012120205.

It is not an unprimeable number, because it can be changed into a prime (51012120223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5336249 + ... + 5345799.

It is an arithmetic number, because the mean of its divisors is an integer number (1160525016).

Almost surely, 2^51012120224 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 51012120224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55705200768).

51012120224 is an abundant number, since it is smaller than the sum of its proper divisors (60398281312).

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

51012120224 is a wasteful number, since it uses less digits than its factorization.

51012120224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9958 (or 9950 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 51012120224 its reverse (42202121015), we get a palindrome (93214241239).

The spelling of 51012120224 in words is "fifty-one billion, twelve million, one hundred twenty thousand, two hundred twenty-four".