51086518480169 has 2 divisors, whose sum is σ = 51086518480170. Its totient is φ = 51086518480168.

The previous prime is 51086518480157. The next prime is 51086518480181. The reversal of 51086518480169 is 96108481568015.

51086518480169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (51086518480157) and next prime (51086518480181).

It can be written as a sum of positive squares in only one way, i.e., 48657767662144 + 2428750818025 = 6975512^2 + 1558445^2 .

It is a cyclic number.

It is not a de Polignac number, because 51086518480169 - 2³⁶ = 51017799003433 is a prime.

It is a super-2 number, since 2×51086518480169² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51086518480969) 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, 25543259240084 + 25543259240085.

It is an arithmetic number, because the mean of its divisors is an integer number (25543259240085).

Almost surely, 2^{51086518480169} is an apocalyptic number.

It is an amenable number.

51086518480169 is a deficient number, since it is larger than the sum of its proper divisors (1).

51086518480169 is an equidigital number, since it uses as much as digits as its factorization.

51086518480169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16588800, while the sum is 62.

The spelling of 51086518480169 in words is "fifty-one trillion, eighty-six billion, five hundred eighteen million, four hundred eighty thousand, one hundred sixty-nine".