171094740497 has 4 divisors (see below), whose sum is σ = 171177436980. Its totient is φ = 171012044016.

The previous prime is 171094740437. The next prime is 171094740499. The reversal of 171094740497 is 794047490171.

It is a Cunningham number, because it is equal to 413636²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26809477696 + 144285262801 = 163736^2 + 379849^2 .

It is a cyclic number.

It is not a de Polignac number, because 171094740497 - 2⁶ = 171094740433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171094740499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41345138 + ... + 41349275.

It is an arithmetic number, because the mean of its divisors is an integer number (42794359245).

Almost surely, 2^171094740497 is an apocalyptic number.

It is an amenable number.

171094740497 is a deficient number, since it is larger than the sum of its proper divisors (82696483).

171094740497 is an equidigital number, since it uses as much as digits as its factorization.

171094740497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82696482.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 171094740497 in words is "one hundred seventy-one billion, ninety-four million, seven hundred forty thousand, four hundred ninety-seven".