51241581180 has 96 divisors (see below), whose sum is σ = 160582121280. Its totient is φ = 13564661760.

The previous prime is 51241581151. The next prime is 51241581187. The reversal of 51241581180 is 8118514215.

51241581180 is a `hidden beast` number, since 51 + 24 + 1 + 581 + 1 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51241581187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272341 + ... + 420300.

It is an arithmetic number, because the mean of its divisors is an integer number (1672730430).

Almost surely, 2^51241581180 is an apocalyptic number.

It is an amenable number.

51241581180 is an abundant number, since it is smaller than the sum of its proper divisors (109340540100).

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

51241581180 is a wasteful number, since it uses less digits than its factorization.

51241581180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692796 (or 692788 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 36.

The spelling of 51241581180 in words is "fifty-one billion, two hundred forty-one million, five hundred eighty-one thousand, one hundred eighty".