166336633661 has 8 divisors (see below), whose sum is σ = 181461100800. Its totient is φ = 151212659040.

The previous prime is 166336633651. The next prime is 166336633693.

166336633661 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 166336633661 - 2¹⁴ = 166336617277 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 (166336633601) 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, 1221905 + ... + 1351193.

It is an arithmetic number, because the mean of its divisors is an integer number (22682637600).

Almost surely, 2^166336633661 is an apocalyptic number.

166336633661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166336633661 is a deficient number, since it is larger than the sum of its proper divisors (15124467139).

166336633661 is a wasteful number, since it uses less digits than its factorization.

166336633661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246259.

The product of its digits is 3779136, while the sum is 50.

It can be divided in two parts, 166336 and 633661, that added together give a palindrome (799997).

The spelling of 166336633661 in words is "one hundred sixty-six billion, three hundred thirty-six million, six hundred thirty-three thousand, six hundred sixty-one".