655017809194559 has 2 divisors, whose sum is σ = 655017809194560. Its totient is φ = 655017809194558.

The previous prime is 655017809194513. The next prime is 655017809194591. The reversal of 655017809194559 is 955491908710556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655017809194559 - 2¹⁶ = 655017809129023 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655017809194159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327508904597279 + 327508904597280.

It is an arithmetic number, because the mean of its divisors is an integer number (327508904597280).

Almost surely, 2^{655017809194559} is an apocalyptic number.

655017809194559 is a deficient number, since it is larger than the sum of its proper divisors (1).

655017809194559 is an equidigital number, since it uses as much as digits as its factorization.

655017809194559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360000, while the sum is 74.

The spelling of 655017809194559 in words is "six hundred fifty-five trillion, seventeen billion, eight hundred nine million, one hundred ninety-four thousand, five hundred fifty-nine".