171969531814079 has 4 divisors (see below), whose sum is σ = 172045928765160. Its totient is φ = 171893134863000.

The previous prime is 171969531814061. The next prime is 171969531814103. The reversal of 171969531814079 is 970418135969171.

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

It is a cyclic number.

It is not a de Polignac number, because 171969531814079 - 2¹² = 171969531809983 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 (171969531814039) 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, 38198472164 + ... + 38198476665.

It is an arithmetic number, because the mean of its divisors is an integer number (43011482191290).

Almost surely, 2^{171969531814079} is an apocalyptic number.

171969531814079 is a deficient number, since it is larger than the sum of its proper divisors (76396951081).

171969531814079 is an equidigital number, since it uses as much as digits as its factorization.

171969531814079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76396951080.

The product of its (nonzero) digits is 102876480, while the sum is 71.

The spelling of 171969531814079 in words is "one hundred seventy-one trillion, nine hundred sixty-nine billion, five hundred thirty-one million, eight hundred fourteen thousand, seventy-nine".