17205205385 has 32 divisors (see below), whose sum is σ = 22250495232. Its totient is φ = 12724992000.

The previous prime is 17205205379. The next prime is 17205205393. The reversal of 17205205385 is 58350250271.

It is not a de Polignac number, because 17205205385 - 2⁶ = 17205205321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1551932 + ... + 1562978.

It is an arithmetic number, because the mean of its divisors is an integer number (695327976).

Almost surely, 2^17205205385 is an apocalyptic number.

It is an amenable number.

17205205385 is a deficient number, since it is larger than the sum of its proper divisors (5045289847).

17205205385 is a wasteful number, since it uses less digits than its factorization.

17205205385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11393.

The product of its (nonzero) digits is 84000, while the sum is 38.

The spelling of 17205205385 in words is "seventeen billion, two hundred five million, two hundred five thousand, three hundred eighty-five".