17085879221 has 8 divisors (see below), whose sum is σ = 17850051000. Its totient is φ = 16333374400.

The previous prime is 17085879211. The next prime is 17085879227. The reversal of 17085879221 is 12297858071.

It can be written as a sum of positive squares in 4 ways, for example, as 2308802500 + 14777076721 = 48050^2 + 121561^2 .

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 17085879221 - 2⁶ = 17085879157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17085879221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17085879227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2913746 + ... + 2919603.

It is an arithmetic number, because the mean of its divisors is an integer number (2231256375).

Almost surely, 2^17085879221 is an apocalyptic number.

It is an amenable number.

17085879221 is a deficient number, since it is larger than the sum of its proper divisors (764171779).

17085879221 is a wasteful number, since it uses less digits than its factorization.

17085879221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5833479.

The product of its (nonzero) digits is 564480, while the sum is 50.

The spelling of 17085879221 in words is "seventeen billion, eighty-five million, eight hundred seventy-nine thousand, two hundred twenty-one".