166042085836 has 24 divisors (see below), whose sum is σ = 319303239696. Its totient is φ = 74922769920.

The previous prime is 166042085813. The next prime is 166042085863. The reversal of 166042085836 is 638580240661.

It is a happy number.

It is a super-3 number, since 3×166042085836³ (a number of 35 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 166042085836.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13766541 + ... + 13778596.

It is an arithmetic number, because the mean of its divisors is an integer number (13304301654).

Almost surely, 2^166042085836 is an apocalyptic number.

It is an amenable number.

166042085836 is a deficient number, since it is larger than the sum of its proper divisors (153261153860).

166042085836 is a wasteful number, since it uses less digits than its factorization.

166042085836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27545289 (or 27545287 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 166042085836 in words is "one hundred sixty-six billion, forty-two million, eighty-five thousand, eight hundred thirty-six".