5345666073281 has 2 divisors, whose sum is σ = 5345666073282. Its totient is φ = 5345666073280.

The previous prime is 5345666073277. The next prime is 5345666073299. The reversal of 5345666073281 is 1823706665435.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5280620161600 + 65045911681 = 2297960^2 + 255041^2 .

It is a cyclic number.

It is not a de Polignac number, because 5345666073281 - 2² = 5345666073277 is a prime.

It is a super-2 number, since 2×5345666073281² (a number of 26 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 (5345666073581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2672833036640 + 2672833036641.

It is an arithmetic number, because the mean of its divisors is an integer number (2672833036641).

Almost surely, 2^{5345666073281} is an apocalyptic number.

It is an amenable number.

5345666073281 is a deficient number, since it is larger than the sum of its proper divisors (1).

5345666073281 is an equidigital number, since it uses as much as digits as its factorization.

5345666073281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21772800, while the sum is 56.

The spelling of 5345666073281 in words is "five trillion, three hundred forty-five billion, six hundred sixty-six million, seventy-three thousand, two hundred eighty-one".