166013424661 has 8 divisors (see below), whose sum is σ = 189817442624. Its totient is φ = 142231360320.

The previous prime is 166013424659. The next prime is 166013424671. The reversal of 166013424661 is 166424310661.

It is a happy number.

166013424661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 166013424661 - 2¹ = 166013424659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166013424671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5472195 + ... + 5502448.

It is an arithmetic number, because the mean of its divisors is an integer number (23727180328).

Almost surely, 2^166013424661 is an apocalyptic number.

It is an amenable number.

166013424661 is a deficient number, since it is larger than the sum of its proper divisors (23804017963).

166013424661 is a wasteful number, since it uses less digits than its factorization.

166013424661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10976811.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 166013424661 in words is "one hundred sixty-six billion, thirteen million, four hundred twenty-four thousand, six hundred sixty-one".