166286682661 has 8 divisors (see below), whose sum is σ = 181659520800. Its totient is φ = 150956489040.

The previous prime is 166286682649. The next prime is 166286682697.

166286682661 is nontrivially palindromic in base 10.

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 166286682661 - 2¹¹ = 166286680613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166286682596 and 166286682605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166286682361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10652971 + ... + 10668568.

It is an arithmetic number, because the mean of its divisors is an integer number (22707440100).

Almost surely, 2^166286682661 is an apocalyptic number.

166286682661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166286682661 is a deficient number, since it is larger than the sum of its proper divisors (15372838139).

166286682661 is a wasteful number, since it uses less digits than its factorization.

166286682661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21322259.

The product of its digits is 11943936, while the sum is 58.

The spelling of 166286682661 in words is "one hundred sixty-six billion, two hundred eighty-six million, six hundred eighty-two thousand, six hundred sixty-one".