171020579798 has 16 divisors (see below), whose sum is σ = 262508514576. Its totient is φ = 83517920640.

The previous prime is 171020579797. The next prime is 171020579813. The reversal of 171020579798 is 897975020171.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171020579791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3515690 + ... + 3564002.

It is an arithmetic number, because the mean of its divisors is an integer number (16406782161).

Almost surely, 2^171020579798 is an apocalyptic number.

171020579798 is a deficient number, since it is larger than the sum of its proper divisors (91487934778).

171020579798 is a wasteful number, since it uses less digits than its factorization.

171020579798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89519.

The product of its (nonzero) digits is 2222640, while the sum is 56.

The spelling of 171020579798 in words is "one hundred seventy-one billion, twenty million, five hundred seventy-nine thousand, seven hundred ninety-eight".