166441262411 has 4 divisors (see below), whose sum is σ = 171810335424. Its totient is φ = 161072189400.

The previous prime is 166441262387. The next prime is 166441262441. The reversal of 166441262411 is 114262144661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166441262411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166441262441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2684536460 + ... + 2684536521.

It is an arithmetic number, because the mean of its divisors is an integer number (42952583856).

Almost surely, 2^166441262411 is an apocalyptic number.

166441262411 is a deficient number, since it is larger than the sum of its proper divisors (5369073013).

166441262411 is an equidigital number, since it uses as much as digits as its factorization.

166441262411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369073012.

The product of its digits is 55296, while the sum is 38.

The spelling of 166441262411 in words is "one hundred sixty-six billion, four hundred forty-one million, two hundred sixty-two thousand, four hundred eleven".