205655182585219 has 2 divisors, whose sum is σ = 205655182585220. Its totient is φ = 205655182585218.

The previous prime is 205655182585183. The next prime is 205655182585351. The reversal of 205655182585219 is 912585281556502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205655182585219 - 2¹³ = 205655182577027 is a prime.

It is a super-2 number, since 2×205655182585219² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205655182505219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102827591292609 + 102827591292610.

It is an arithmetic number, because the mean of its divisors is an integer number (102827591292610).

Almost surely, 2^{205655182585219} is an apocalyptic number.

205655182585219 is a deficient number, since it is larger than the sum of its proper divisors (1).

205655182585219 is an equidigital number, since it uses as much as digits as its factorization.

205655182585219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400000, while the sum is 64.

The spelling of 205655182585219 in words is "two hundred five trillion, six hundred fifty-five billion, one hundred eighty-two million, five hundred eighty-five thousand, two hundred nineteen".