172938105027 has 16 divisors (see below), whose sum is σ = 257924100000. Its totient is φ = 114518295072.

The previous prime is 172938105017. The next prime is 172938105029. The reversal of 172938105027 is 720501839271.

It is not a de Polignac number, because 172938105027 - 2²⁰ = 172937056451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172938105029) 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, 21489652 + ... + 21497697.

It is an arithmetic number, because the mean of its divisors is an integer number (16120256250).

Almost surely, 2^172938105027 is an apocalyptic number.

172938105027 is a deficient number, since it is larger than the sum of its proper divisors (84985994973).

172938105027 is a wasteful number, since it uses less digits than its factorization.

172938105027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42987507 (or 42987501 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 172938105027 in words is "one hundred seventy-two billion, nine hundred thirty-eight million, one hundred five thousand, twenty-seven".