166545540417467 has 2 divisors, whose sum is σ = 166545540417468. Its totient is φ = 166545540417466.

The previous prime is 166545540417461. The next prime is 166545540417493. The reversal of 166545540417467 is 764714045545661.

It is a weak prime.

It is an emirp because it is prime and its reverse (764714045545661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166545540417467 - 2³⁸ = 166270662510523 is a prime.

It is a super-2 number, since 2×166545540417467² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166545540417461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83272770208733 + 83272770208734.

It is an arithmetic number, because the mean of its divisors is an integer number (83272770208734).

Almost surely, 2^{166545540417467} is an apocalyptic number.

166545540417467 is a deficient number, since it is larger than the sum of its proper divisors (1).

166545540417467 is an equidigital number, since it uses as much as digits as its factorization.

166545540417467 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688000, while the sum is 65.

The spelling of 166545540417467 in words is "one hundred sixty-six trillion, five hundred forty-five billion, five hundred forty million, four hundred seventeen thousand, four hundred sixty-seven".