51820044288 has 112 divisors (see below), whose sum is σ = 145452205920. Its totient is φ = 16364077056.

The previous prime is 51820044281. The next prime is 51820044301. The reversal of 51820044288 is 88244002815.

It is not an unprimeable number, because it can be changed into a prime (51820044281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411456 + ... + 522432.

It is an arithmetic number, because the mean of its divisors is an integer number (1298680410).

Almost surely, 2^51820044288 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 51820044288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72726102960).

51820044288 is an abundant number, since it is smaller than the sum of its proper divisors (93632161632).

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

51820044288 is a wasteful number, since it uses less digits than its factorization.

51820044288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111025 (or 111001 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 42.

The spelling of 51820044288 in words is "fifty-one billion, eight hundred twenty million, forty-four thousand, two hundred eighty-eight".