51747818160 has 160 divisors (see below), whose sum is σ = 165595776192. Its totient is φ = 13357854720.

The previous prime is 51747818159. The next prime is 51747818179. The reversal of 51747818160 is 6181874715.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 31 ways as a sum of consecutive naturals, for example, 1734570 + ... + 1764150.

Almost surely, 2^51747818160 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 51747818160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82797888096).

51747818160 is an abundant number, since it is smaller than the sum of its proper divisors (113847958032).

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

51747818160 is a wasteful number, since it uses less digits than its factorization.

51747818160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29831 (or 29825 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 48.

The spelling of 51747818160 in words is "fifty-one billion, seven hundred forty-seven million, eight hundred eighteen thousand, one hundred sixty".