51306535712 has 48 divisors (see below), whose sum is σ = 105673014720. Its totient is φ = 24474692352.

The previous prime is 51306535691. The next prime is 51306535717. The reversal of 51306535712 is 21753560315.

51306535712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51306535717) 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, 196703 + ... + 375905.

It is an arithmetic number, because the mean of its divisors is an integer number (2201521140).

Almost surely, 2^51306535712 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 51306535712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52836507360).

51306535712 is an abundant number, since it is smaller than the sum of its proper divisors (54366479008).

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

51306535712 is a wasteful number, since it uses less digits than its factorization.

51306535712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179625 (or 179617 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 38.

The spelling of 51306535712 in words is "fifty-one billion, three hundred six million, five hundred thirty-five thousand, seven hundred twelve".