172705841281 has 8 divisors (see below), whose sum is σ = 174328593984. Its totient is φ = 171083249520.

The previous prime is 172705841267. The next prime is 172705841303. The reversal of 172705841281 is 182148507271.

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 172705841281 - 2¹¹ = 172705839233 is a prime.

It is a super-2 number, since 2×172705841281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172705841201) 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, 4201876 + ... + 4242778.

It is an arithmetic number, because the mean of its divisors is an integer number (21791074248).

Almost surely, 2^172705841281 is an apocalyptic number.

It is an amenable number.

172705841281 is a deficient number, since it is larger than the sum of its proper divisors (1622752703).

172705841281 is a wasteful number, since it uses less digits than its factorization.

172705841281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80471.

The product of its (nonzero) digits is 250880, while the sum is 46.

The spelling of 172705841281 in words is "one hundred seventy-two billion, seven hundred five million, eight hundred forty-one thousand, two hundred eighty-one".