171285528897 has 12 divisors (see below), whose sum is σ = 282757063680. Its totient is φ = 97877445048.

The previous prime is 171285528889. The next prime is 171285528913. The reversal of 171285528897 is 798825582171.

171285528897 is a `hidden beast` number, since 1 + 7 + 1 + 28 + 5 + 528 + 89 + 7 = 666.

It is not a de Polignac number, because 171285528897 - 2³ = 171285528889 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 2718817919 = 171285528897 / (1 + 7 + 1 + 2 + 8 + 5 + 5 + 2 + 8 + 8 + 9 + 7).

It is not an unprimeable number, because it can be changed into a prime (171285528847) 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 11 ways as a sum of consecutive naturals, for example, 1359408897 + ... + 1359409022.

It is an arithmetic number, because the mean of its divisors is an integer number (23563088640).

Almost surely, 2^171285528897 is an apocalyptic number.

It is an amenable number.

171285528897 is a deficient number, since it is larger than the sum of its proper divisors (111471534783).

171285528897 is a wasteful number, since it uses less digits than its factorization.

171285528897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718817932 (or 2718817929 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 63.

It can be divided in two parts, 17128 and 5528897, that added together give a square (5546025 = 2355²).

The spelling of 171285528897 in words is "one hundred seventy-one billion, two hundred eighty-five million, five hundred twenty-eight thousand, eight hundred ninety-seven".