171670868839 has 2 divisors, whose sum is σ = 171670868840. Its totient is φ = 171670868838.

The previous prime is 171670868827. The next prime is 171670868849. The reversal of 171670868839 is 938868076171.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171670868839 - 2¹⁷ = 171670737767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171670868849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85835434419 + 85835434420.

It is an arithmetic number, because the mean of its divisors is an integer number (85835434420).

Almost surely, 2^171670868839 is an apocalyptic number.

171670868839 is a deficient number, since it is larger than the sum of its proper divisors (1).

171670868839 is an equidigital number, since it uses as much as digits as its factorization.

171670868839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 171670868839 in words is "one hundred seventy-one billion, six hundred seventy million, eight hundred sixty-eight thousand, eight hundred thirty-nine".