17308638842 has 24 divisors (see below), whose sum is σ = 30216498228. Its totient is φ = 7404763520.

The previous prime is 17308638827. The next prime is 17308638847. The reversal of 17308638842 is 24883680371.

It can be written as a sum of positive squares in 2 ways, for example, as 16765329361 + 543309481 = 129481^2 + 23309^2 .

It is a super-2 number, since 2×17308638842² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17308638847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2099513 + ... + 2107740.

Almost surely, 2^17308638842 is an apocalyptic number.

17308638842 is a deficient number, since it is larger than the sum of its proper divisors (12907859386).

17308638842 is a wasteful number, since it uses less digits than its factorization.

17308638842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207294 (or 4207283 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 17308638842 in words is "seventeen billion, three hundred eight million, six hundred thirty-eight thousand, eight hundred forty-two".