166233226665 has 16 divisors (see below), whose sum is σ = 290152541376. Its totient is φ = 80597928000.

The previous prime is 166233226603. The next prime is 166233226673. The reversal of 166233226665 is 566622332661.

It is a happy number.

It is not a de Polignac number, because 166233226665 - 2¹¹ = 166233224617 is a prime.

It is a super-3 number, since 3×166233226665³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503736886 + ... + 503737215.

It is an arithmetic number, because the mean of its divisors is an integer number (18134533836).

Almost surely, 2^166233226665 is an apocalyptic number.

166233226665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166233226665 is a deficient number, since it is larger than the sum of its proper divisors (123919314711).

166233226665 is a wasteful number, since it uses less digits than its factorization.

166233226665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007474120.

The product of its digits is 2799360, while the sum is 48.

The spelling of 166233226665 in words is "one hundred sixty-six billion, two hundred thirty-three million, two hundred twenty-six thousand, six hundred sixty-five".