171425548873 has 2 divisors, whose sum is σ = 171425548874. Its totient is φ = 171425548872.

The previous prime is 171425548799. The next prime is 171425548883. The reversal of 171425548873 is 378845524171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122200583184 + 49224965689 = 349572^2 + 221867^2 .

It is an emirp because it is prime and its reverse (378845524171) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171425548873 is a prime.

It is not a weakly prime, because it can be changed into another prime (171425548883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85712774436 + 85712774437.

It is an arithmetic number, because the mean of its divisors is an integer number (85712774437).

Almost surely, 2^171425548873 is an apocalyptic number.

It is an amenable number.

171425548873 is a deficient number, since it is larger than the sum of its proper divisors (1).

171425548873 is an equidigital number, since it uses as much as digits as its factorization.

171425548873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7526400, while the sum is 55.

The spelling of 171425548873 in words is "one hundred seventy-one billion, four hundred twenty-five million, five hundred forty-eight thousand, eight hundred seventy-three".