171282451640347 has 2 divisors, whose sum is σ = 171282451640348. Its totient is φ = 171282451640346.

The previous prime is 171282451640299. The next prime is 171282451640357. The reversal of 171282451640347 is 743046154282171.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171282451640347 is a prime.

It is a super-2 number, since 2×171282451640347² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (171282451640357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85641225820173 + 85641225820174.

It is an arithmetic number, because the mean of its divisors is an integer number (85641225820174).

Almost surely, 2^{171282451640347} is an apocalyptic number.

171282451640347 is a deficient number, since it is larger than the sum of its proper divisors (1).

171282451640347 is an equidigital number, since it uses as much as digits as its factorization.

171282451640347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 171282451640347 in words is "one hundred seventy-one trillion, two hundred eighty-two billion, four hundred fifty-one million, six hundred forty thousand, three hundred forty-seven".