172138739313 has 16 divisors (see below), whose sum is σ = 237506935680. Its totient is φ = 110767324416.

The previous prime is 172138739303. The next prime is 172138739321. The reversal of 172138739313 is 313937831271.

It is not a de Polignac number, because 172138739313 - 2¹⁷ = 172138608241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172138739303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27645 + ... + 587402.

It is an arithmetic number, because the mean of its divisors is an integer number (14844183480).

Almost surely, 2^172138739313 is an apocalyptic number.

It is an amenable number.

172138739313 is a deficient number, since it is larger than the sum of its proper divisors (65368196367).

172138739313 is a wasteful number, since it uses less digits than its factorization.

172138739313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618296.

The product of its digits is 571536, while the sum is 48.

The spelling of 172138739313 in words is "one hundred seventy-two billion, one hundred thirty-eight million, seven hundred thirty-nine thousand, three hundred thirteen".