51002180871 has 64 divisors (see below), whose sum is σ = 75954278400. Its totient is φ = 30307737600.

The previous prime is 51002180869. The next prime is 51002180893. The reversal of 51002180871 is 17808120015.

It is not a de Polignac number, because 51002180871 - 2¹ = 51002180869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51002180851) 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 63 ways as a sum of consecutive naturals, for example, 24413595 + ... + 24415683.

It is an arithmetic number, because the mean of its divisors is an integer number (1186785600).

Almost surely, 2^51002180871 is an apocalyptic number.

51002180871 is a deficient number, since it is larger than the sum of its proper divisors (24952097529).

51002180871 is a wasteful number, since it uses less digits than its factorization.

51002180871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 4480, while the sum is 33.

The spelling of 51002180871 in words is "fifty-one billion, two million, one hundred eighty thousand, eight hundred seventy-one".