166289421662 has 32 divisors (see below), whose sum is σ = 325054441152. Its totient is φ = 61915129344.

The previous prime is 166289421631. The next prime is 166289421667. The reversal of 166289421662 is 266124982661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166289421667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26869793 + ... + 26875980.

It is an arithmetic number, because the mean of its divisors is an integer number (10157951286).

Almost surely, 2^166289421662 is an apocalyptic number.

166289421662 is a deficient number, since it is larger than the sum of its proper divisors (158765019490).

166289421662 is a wasteful number, since it uses less digits than its factorization.

166289421662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53745812.

The product of its digits is 2985984, while the sum is 53.

The spelling of 166289421662 in words is "one hundred sixty-six billion, two hundred eighty-nine million, four hundred twenty-one thousand, six hundred sixty-two".