171216099707 has 2 divisors, whose sum is σ = 171216099708. Its totient is φ = 171216099706.

The previous prime is 171216099619. The next prime is 171216099739. The reversal of 171216099707 is 707990612171.

It is a strong prime.

It is an emirp because it is prime and its reverse (707990612171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171216099707 - 2¹⁸ = 171215837563 is a prime.

It is not a weakly prime, because it can be changed into another prime (171216099107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85608049853 + 85608049854.

It is an arithmetic number, because the mean of its divisors is an integer number (85608049854).

Almost surely, 2^171216099707 is an apocalyptic number.

171216099707 is a deficient number, since it is larger than the sum of its proper divisors (1).

171216099707 is an equidigital number, since it uses as much as digits as its factorization.

171216099707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 333396, while the sum is 50.

The spelling of 171216099707 in words is "one hundred seventy-one billion, two hundred sixteen million, ninety-nine thousand, seven hundred seven".