51660850002269 has 2 divisors, whose sum is σ = 51660850002270. Its totient is φ = 51660850002268.

The previous prime is 51660850002169. The next prime is 51660850002331. The reversal of 51660850002269 is 96220005806615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47640544297369 + 4020305704900 = 6902213^2 + 2005070^2 .

It is a cyclic number.

It is not a de Polignac number, because 51660850002269 - 2⁴⁰ = 50561338374493 is a prime.

It is a super-2 number, since 2×51660850002269² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51660850002169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25830425001134 + 25830425001135.

It is an arithmetic number, because the mean of its divisors is an integer number (25830425001135).

Almost surely, 2^{51660850002269} is an apocalyptic number.

It is an amenable number.

51660850002269 is a deficient number, since it is larger than the sum of its proper divisors (1).

51660850002269 is an equidigital number, since it uses as much as digits as its factorization.

51660850002269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 51660850002269 in words is "fifty-one trillion, six hundred sixty billion, eight hundred fifty million, two thousand, two hundred sixty-nine".