51555055180 has 12 divisors (see below), whose sum is σ = 108265615920. Its totient is φ = 20622022064.

The previous prime is 51555055163. The next prime is 51555055193. The reversal of 51555055180 is 8155055515.

It is a super-2 number, since 2×51555055180² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288876360 + ... + 1288876399.

It is an arithmetic number, because the mean of its divisors is an integer number (9022134660).

Almost surely, 2^51555055180 is an apocalyptic number.

It is an amenable number.

51555055180 is an abundant number, since it is smaller than the sum of its proper divisors (56710560740).

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

51555055180 is a wasteful number, since it uses less digits than its factorization.

51555055180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577752768 (or 2577752766 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 40.

The spelling of 51555055180 in words is "fifty-one billion, five hundred fifty-five million, fifty-five thousand, one hundred eighty".