171574172066 has 8 divisors (see below), whose sum is σ = 280757736144. Its totient is φ = 77988260020.

The previous prime is 171574172051. The next prime is 171574172093. The reversal of 171574172066 is 660271475171.

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

It is a self number, because there is not a number n which added to its sum of digits gives 171574172066.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3899412980 + ... + 3899413023.

It is an arithmetic number, because the mean of its divisors is an integer number (35094717018).

Almost surely, 2^171574172066 is an apocalyptic number.

171574172066 is a deficient number, since it is larger than the sum of its proper divisors (109183564078).

171574172066 is a wasteful number, since it uses less digits than its factorization.

171574172066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7798826016.

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 171574172066 in words is "one hundred seventy-one billion, five hundred seventy-four million, one hundred seventy-two thousand, sixty-six".