51166065255169 has 2 divisors, whose sum is σ = 51166065255170. Its totient is φ = 51166065255168.

The previous prime is 51166065255133. The next prime is 51166065255199. The reversal of 51166065255169 is 96155256066115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49038367507600 + 2127697747569 = 7002740^2 + 1458663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51166065255169 is a prime.

It is a super-2 number, since 2×51166065255169² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51166065255199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25583032627584 + 25583032627585.

It is an arithmetic number, because the mean of its divisors is an integer number (25583032627585).

Almost surely, 2^{51166065255169} is an apocalyptic number.

It is an amenable number.

51166065255169 is a deficient number, since it is larger than the sum of its proper divisors (1).

51166065255169 is an equidigital number, since it uses as much as digits as its factorization.

51166065255169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580000, while the sum is 58.

The spelling of 51166065255169 in words is "fifty-one trillion, one hundred sixty-six billion, sixty-five million, two hundred fifty-five thousand, one hundred sixty-nine".