39173118085 has 16 divisors (see below), whose sum is σ = 47184466032. Its totient is φ = 31220800000.

The previous prime is 39173118011. The next prime is 39173118107. The reversal of 39173118085 is 58081137193.

It is a Cunningham number, because it is equal to 197922²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 25070605569 + 14102512516 = 158337^2 + 118754^2 .

It is not a de Polignac number, because 39173118085 - 2⁷ = 39173117957 is a prime.

It is a super-3 number, since 3×39173118085³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3006585 + ... + 3019585.

It is an arithmetic number, because the mean of its divisors is an integer number (2949029127).

Almost surely, 2^39173118085 is an apocalyptic number.

It is an amenable number.

39173118085 is a deficient number, since it is larger than the sum of its proper divisors (8011347947).

39173118085 is a wasteful number, since it uses less digits than its factorization.

39173118085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15224.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 39173118085 in words is "thirty-nine billion, one hundred seventy-three million, one hundred eighteen thousand, eighty-five".