166845083535 has 36 divisors (see below), whose sum is σ = 313155401832. Its totient is φ = 82139114304.

The previous prime is 166845083459. The next prime is 166845083551. The reversal of 166845083535 is 535380548661.

It is a happy number.

166845083535 is a `hidden beast` number, since 1 + 6 + 6 + 84 + 508 + 3 + 53 + 5 = 666.

It is not a de Polignac number, because 166845083535 - 2²⁸ = 166576648079 is a prime.

It is a super-2 number, since 2×166845083535² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10961829 + ... + 10977038.

It is an arithmetic number, because the mean of its divisors is an integer number (8698761162).

Almost surely, 2^166845083535 is an apocalyptic number.

166845083535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166845083535 is a deficient number, since it is larger than the sum of its proper divisors (146310318297).

166845083535 is a wasteful number, since it uses less digits than its factorization.

166845083535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21938904 (or 21938888 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 166845083535 in words is "one hundred sixty-six billion, eight hundred forty-five million, eighty-three thousand, five hundred thirty-five".