166411505401 has 8 divisors (see below), whose sum is σ = 166578159744. Its totient is φ = 166244910480.

The previous prime is 166411505333. The next prime is 166411505497. The reversal of 166411505401 is 104505114661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166411505401 - 2¹⁷ = 166411374329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166411505101) 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 in 7 ways as a sum of consecutive naturals, for example, 7322466 + ... + 7345156.

It is an arithmetic number, because the mean of its divisors is an integer number (20822269968).

Almost surely, 2^166411505401 is an apocalyptic number.

It is an amenable number.

166411505401 is a deficient number, since it is larger than the sum of its proper divisors (166654343).

166411505401 is a wasteful number, since it uses less digits than its factorization.

166411505401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29711.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 166411505401 in words is "one hundred sixty-six billion, four hundred eleven million, five hundred five thousand, four hundred one".