171004579729 has 3 divisors (see below), whose sum is σ = 171004993257. Its totient is φ = 171004166202.

The previous prime is 171004579727. The next prime is 171004579747. The reversal of 171004579729 is 927975400171.

It is a happy number.

The square root of 171004579729 is 413527.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 927975400171 = 185309 ⋅5007719.

It is not a de Polignac number, because 171004579729 - 2¹ = 171004579727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171004579727) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 206764 + ... + 620290.

It is an arithmetic number, because the mean of its divisors is an integer number (57001664419).

Almost surely, 2^171004579729 is an apocalyptic number.

171004579729 is the 413527-th square number.

171004579729 is the 206764-th centered octagonal number.

It is an amenable number.

171004579729 is a deficient number, since it is larger than the sum of its proper divisors (413528).

171004579729 is an frugal number, since it uses more digits than its factorization.

171004579729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827054 (or 413527 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 52.

The spelling of 171004579729 in words is "one hundred seventy-one billion, four million, five hundred seventy-nine thousand, seven hundred twenty-nine".