51032112320 has 168 divisors, whose sum is σ = 149676343776. Its totient is φ = 16467419136.

The previous prime is 51032112283. The next prime is 51032112343. The reversal of 51032112320 is 2321123015.

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

It is a junction number, because it is equal to n+sod(n) for n = 51032112292 and 51032112301.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170837 + ... + 362283.

Almost surely, 2^51032112320 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 51032112320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74838171888).

51032112320 is an abundant number, since it is smaller than the sum of its proper divisors (98644231456).

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

51032112320 is a wasteful number, since it uses less digits than its factorization.

51032112320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191495 (or 191478 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 51032112320 its reverse (2321123015), we get a palindrome (53353235335).

The spelling of 51032112320 in words is "fifty-one billion, thirty-two million, one hundred twelve thousand, three hundred twenty".