172016742939 has 8 divisors (see below), whose sum is σ = 230340017232. Its totient is φ = 114185648640.

The previous prime is 172016742889. The next prime is 172016742949. The reversal of 172016742939 is 939247610271.

It is a happy number.

172016742939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172016742939 - 2⁷ = 172016742811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172016742891 and 172016742900.

It is not an unprimeable number, because it can be changed into a prime (172016742949) 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 7 ways as a sum of consecutive naturals, for example, 123044182 + ... + 123045579.

It is an arithmetic number, because the mean of its divisors is an integer number (28792502154).

Almost surely, 2^172016742939 is an apocalyptic number.

172016742939 is a deficient number, since it is larger than the sum of its proper divisors (58323274293).

172016742939 is a wasteful number, since it uses less digits than its factorization.

172016742939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246089997.

The product of its (nonzero) digits is 1143072, while the sum is 51.

The spelling of 172016742939 in words is "one hundred seventy-two billion, sixteen million, seven hundred forty-two thousand, nine hundred thirty-nine".