51347121180 has 96 divisors (see below), whose sum is σ = 147593263104. Its totient is φ = 13331656704.

The previous prime is 51347121149. The next prime is 51347121341. The reversal of 51347121180 is 8112174315.

51347121180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497089 + ... + 591431.

It is an arithmetic number, because the mean of its divisors is an integer number (1537429824).

Almost surely, 2^51347121180 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 51347121180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73796631552).

51347121180 is an abundant number, since it is smaller than the sum of its proper divisors (96246141924).

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

51347121180 is a wasteful number, since it uses less digits than its factorization.

51347121180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94595 (or 94593 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 33.

Adding to 51347121180 its reverse (8112174315), we get a palindrome (59459295495).

The spelling of 51347121180 in words is "fifty-one billion, three hundred forty-seven million, one hundred twenty-one thousand, one hundred eighty".