166844326452871 has 2 divisors, whose sum is σ = 166844326452872. Its totient is φ = 166844326452870.

The previous prime is 166844326452863. The next prime is 166844326452887. The reversal of 166844326452871 is 178254623448661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166844326452871 - 2³ = 166844326452863 is a prime.

It is a super-3 number, since 3×166844326452871³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166844326452797 and 166844326452806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166844326452851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83422163226435 + 83422163226436.

It is an arithmetic number, because the mean of its divisors is an integer number (83422163226436).

Almost surely, 2^{166844326452871} is an apocalyptic number.

166844326452871 is a deficient number, since it is larger than the sum of its proper divisors (1).

166844326452871 is an equidigital number, since it uses as much as digits as its factorization.

166844326452871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 371589120, while the sum is 67.

The spelling of 166844326452871 in words is "one hundred sixty-six trillion, eight hundred forty-four billion, three hundred twenty-six million, four hundred fifty-two thousand, eight hundred seventy-one".