667481050006171 has 2 divisors, whose sum is σ = 667481050006172. Its totient is φ = 667481050006170.

The previous prime is 667481050006153. The next prime is 667481050006201. The reversal of 667481050006171 is 171600050184766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667481050006171 - 2¹¹ = 667481050004123 is a prime.

It is a super-2 number, since 2×667481050006171² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (667481050006271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333740525003085 + 333740525003086.

It is an arithmetic number, because the mean of its divisors is an integer number (333740525003086).

Almost surely, 2^{667481050006171} is an apocalyptic number.

667481050006171 is a deficient number, since it is larger than the sum of its proper divisors (1).

667481050006171 is an equidigital number, since it uses as much as digits as its factorization.

667481050006171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 667481050006171 in words is "six hundred sixty-seven trillion, four hundred eighty-one billion, fifty million, six thousand, one hundred seventy-one".