171025804079 has 4 divisors (see below), whose sum is σ = 184181635176. Its totient is φ = 157869972984.

The previous prime is 171025804067. The next prime is 171025804091. The reversal of 171025804079 is 970408520171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970408520171 = 179 ⋅5421276649.

It is an interprime number because it is at equal distance from previous prime (171025804067) and next prime (171025804091).

It is a cyclic number.

It is not a de Polignac number, because 171025804079 - 2⁴ = 171025804063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171025800079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6577915529 + ... + 6577915554.

It is an arithmetic number, because the mean of its divisors is an integer number (46045408794).

Almost surely, 2^171025804079 is an apocalyptic number.

171025804079 is a deficient number, since it is larger than the sum of its proper divisors (13155831097).

171025804079 is a wasteful number, since it uses less digits than its factorization.

171025804079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13155831096.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 171025804079 in words is "one hundred seventy-one billion, twenty-five million, eight hundred four thousand, seventy-nine".