17120645205 has 8 divisors (see below), whose sum is σ = 27393032352. Its totient is φ = 9131010768.

The previous prime is 17120645189. The next prime is 17120645219. The reversal of 17120645205 is 50254602171.

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

It is not a de Polignac number, because 17120645205 - 2⁴ = 17120645189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570688159 + ... + 570688188.

It is an arithmetic number, because the mean of its divisors is an integer number (3424129044).

Almost surely, 2^17120645205 is an apocalyptic number.

17120645205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17120645205 is a deficient number, since it is larger than the sum of its proper divisors (10272387147).

17120645205 is a wasteful number, since it uses less digits than its factorization.

17120645205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141376355.

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 17120645205 in words is "seventeen billion, one hundred twenty million, six hundred forty-five thousand, two hundred five".