205580649073 has 8 divisors (see below), whose sum is σ = 205982352576. Its totient is φ = 205179092400.

The previous prime is 205580649067. The next prime is 205580649091. The reversal of 205580649073 is 370946085502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205580649073 - 2¹⁷ = 205580518001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205580649973) 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 in 7 ways as a sum of consecutive naturals, for example, 3011388 + ... + 3078898.

It is an arithmetic number, because the mean of its divisors is an integer number (25747794072).

Almost surely, 2^205580649073 is an apocalyptic number.

It is an amenable number.

205580649073 is a deficient number, since it is larger than the sum of its proper divisors (401703503).

205580649073 is an equidigital number, since it uses as much as digits as its factorization.

205580649073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73415.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 205580649073 in words is "two hundred five billion, five hundred eighty million, six hundred forty-nine thousand, seventy-three".