171872039067 has 16 divisors (see below), whose sum is σ = 241247136000. Its totient is φ = 108540311904.

The previous prime is 171872039063. The next prime is 171872039081. The reversal of 171872039067 is 760930278171.

It is not a de Polignac number, because 171872039067 - 2² = 171872039063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (171872039063) 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, 475234 + ... + 754712.

It is an arithmetic number, because the mean of its divisors is an integer number (15077946000).

Almost surely, 2^171872039067 is an apocalyptic number.

171872039067 is a deficient number, since it is larger than the sum of its proper divisors (69375096933).

171872039067 is a wasteful number, since it uses less digits than its factorization.

171872039067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290290.

The product of its (nonzero) digits is 889056, while the sum is 51.

The spelling of 171872039067 in words is "one hundred seventy-one billion, eight hundred seventy-two million, thirty-nine thousand, sixty-seven".