17191315990 has 32 divisors (see below), whose sum is σ = 31865218560. Its totient is φ = 6673651200.

The previous prime is 17191315979. The next prime is 17191315991. The reversal of 17191315990 is 9951319171.

It is a self number, because there is not a number n which added to its sum of digits gives 17191315990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17191315991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31455 + ... + 188074.

It is an arithmetic number, because the mean of its divisors is an integer number (995788080).

Almost surely, 2^17191315990 is an apocalyptic number.

17191315990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17191315990 is a deficient number, since it is larger than the sum of its proper divisors (14673902570).

17191315990 is a wasteful number, since it uses less digits than its factorization.

17191315990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219768.

The product of its (nonzero) digits is 76545, while the sum is 46.

The spelling of 17191315990 in words is "seventeen billion, one hundred ninety-one million, three hundred fifteen thousand, nine hundred ninety".