51306634160 has 80 divisors (see below), whose sum is σ = 119720462400. Its totient is φ = 20448411648.

The previous prime is 51306634087. The next prime is 51306634163. The reversal of 51306634160 is 6143660315.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 51306634160.

It is not an unprimeable number, because it can be changed into a prime (51306634163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39802796 + ... + 39804084.

It is an arithmetic number, because the mean of its divisors is an integer number (1496505780).

Almost surely, 2^51306634160 is an apocalyptic number.

It is an amenable number.

51306634160 is an abundant number, since it is smaller than the sum of its proper divisors (68413828240).

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

51306634160 is a wasteful number, since it uses less digits than its factorization.

51306634160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718 (or 2712 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 51306634160 in words is "fifty-one billion, three hundred six million, six hundred thirty-four thousand, one hundred sixty".