166845026404 has 12 divisors (see below), whose sum is σ = 333690052864. Its totient is φ = 71505011304.

The previous prime is 166845026393. The next prime is 166845026407. The reversal of 166845026404 is 404620548661.

166845026404 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (166845026407) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2979375444 + ... + 2979375499.

Almost surely, 2^166845026404 is an apocalyptic number.

166845026404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

166845026404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166845026404 is a wasteful number, since it uses less digits than its factorization.

166845026404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5958750954 (or 5958750952 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 166845026404 in words is "one hundred sixty-six billion, eight hundred forty-five million, twenty-six thousand, four hundred four".