51310530560 has 208 divisors, whose sum is σ = 134109604800. Its totient is φ = 18769379328.

The previous prime is 51310530539. The next prime is 51310530577. The reversal of 51310530560 is 6503501315.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11282207 + ... + 11286753.

Almost surely, 2^51310530560 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 51310530560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67054802400).

51310530560 is an abundant number, since it is smaller than the sum of its proper divisors (82799074240).

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

51310530560 is a wasteful number, since it uses less digits than its factorization.

51310530560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624 (or 4602 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 29.

The spelling of 51310530560 in words is "fifty-one billion, three hundred ten million, five hundred thirty thousand, five hundred sixty".