171255057773881 has 8 divisors (see below), whose sum is σ = 177175576683720. Its totient is φ = 165335550336768.

The previous prime is 171255057773879. The next prime is 171255057773887. The reversal of 171255057773881 is 188377750552171.

It can be written as a sum of positive squares in 4 ways, for example, as 90814877139856 + 80440180634025 = 9529684^2 + 8968845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 171255057773881 - 2¹ = 171255057773879 is a prime.

It is a super-2 number, since 2×171255057773881² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171255057773887) 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, 252523696 + ... + 253200961.

It is an arithmetic number, because the mean of its divisors is an integer number (22146947085465).

Almost surely, 2^{171255057773881} is an apocalyptic number.

It is an amenable number.

171255057773881 is a deficient number, since it is larger than the sum of its proper divisors (5920518909839).

171255057773881 is a wasteful number, since it uses less digits than its factorization.

171255057773881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505736363.

The product of its (nonzero) digits is 115248000, while the sum is 67.

The spelling of 171255057773881 in words is "one hundred seventy-one trillion, two hundred fifty-five billion, fifty-seven million, seven hundred seventy-three thousand, eight hundred eighty-one".