51081134560171 has 2 divisors, whose sum is σ = 51081134560172. Its totient is φ = 51081134560170.

The previous prime is 51081134560163. The next prime is 51081134560187. The reversal of 51081134560171 is 17106543118015.

51081134560171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51081134560171 - 2³ = 51081134560163 is a prime.

It is a super-2 number, since 2×51081134560171² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51081134560271) 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 as a sum of consecutive naturals, namely, 25540567280085 + 25540567280086.

It is an arithmetic number, because the mean of its divisors is an integer number (25540567280086).

Almost surely, 2^{51081134560171} is an apocalyptic number.

51081134560171 is a deficient number, since it is larger than the sum of its proper divisors (1).

51081134560171 is an equidigital number, since it uses as much as digits as its factorization.

51081134560171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 43.

Adding to 51081134560171 its reverse (17106543118015), we get a palindrome (68187677678186).

The spelling of 51081134560171 in words is "fifty-one trillion, eighty-one billion, one hundred thirty-four million, five hundred sixty thousand, one hundred seventy-one".