17212394523 has 16 divisors (see below), whose sum is σ = 23713243136. Its totient is φ = 11093958720.

The previous prime is 17212394509. The next prime is 17212394543. The reversal of 17212394523 is 32549321271.

It is a happy number.

It is not a de Polignac number, because 17212394523 - 2⁵ = 17212394491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17212394543) 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, 6486 + ... + 185652.

It is an arithmetic number, because the mean of its divisors is an integer number (1482077696).

Almost surely, 2^17212394523 is an apocalyptic number.

17212394523 is a deficient number, since it is larger than the sum of its proper divisors (6500848613).

17212394523 is a wasteful number, since it uses less digits than its factorization.

17212394523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180234.

The product of its digits is 90720, while the sum is 39.

The spelling of 17212394523 in words is "seventeen billion, two hundred twelve million, three hundred ninety-four thousand, five hundred twenty-three".