171728887339 has 2 divisors, whose sum is σ = 171728887340. Its totient is φ = 171728887338.

The previous prime is 171728887273. The next prime is 171728887423. The reversal of 171728887339 is 933788827171.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 171728887339 - 2⁹ = 171728886827 is a prime.

It is not a weakly prime, because it can be changed into another prime (171728887639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85864443669 + 85864443670.

It is an arithmetic number, because the mean of its divisors is an integer number (85864443670).

Almost surely, 2^171728887339 is an apocalyptic number.

171728887339 is a deficient number, since it is larger than the sum of its proper divisors (1).

171728887339 is an equidigital number, since it uses as much as digits as its factorization.

171728887339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28449792, while the sum is 64.

The spelling of 171728887339 in words is "one hundred seventy-one billion, seven hundred twenty-eight million, eight hundred eighty-seven thousand, three hundred thirty-nine".