55666941373793 has 2 divisors, whose sum is σ = 55666941373794. Its totient is φ = 55666941373792.

The previous prime is 55666941373789. The next prime is 55666941373829. The reversal of 55666941373793 is 39737314966655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28194751276129 + 27472190097664 = 5309873^2 + 5241392^2 .

It is a cyclic number.

It is not a de Polignac number, because 55666941373793 - 2² = 55666941373789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55666941373793.

It is not a weakly prime, because it can be changed into another prime (55666941373723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27833470686896 + 27833470686897.

It is an arithmetic number, because the mean of its divisors is an integer number (27833470686897).

Almost surely, 2^{55666941373793} is an apocalyptic number.

It is an amenable number.

55666941373793 is a deficient number, since it is larger than the sum of its proper divisors (1).

55666941373793 is an equidigital number, since it uses as much as digits as its factorization.

55666941373793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2314720800, while the sum is 74.

The spelling of 55666941373793 in words is "fifty-five trillion, six hundred sixty-six billion, nine hundred forty-one million, three hundred seventy-three thousand, seven hundred ninety-three".