166824656444 has 24 divisors (see below), whose sum is σ = 309728348160. Its totient is φ = 78399979056.

The previous prime is 166824656417. The next prime is 166824656497. The reversal of 166824656444 is 444656428661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 166824656444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8632322 + ... + 8651625.

It is an arithmetic number, because the mean of its divisors is an integer number (12905347840).

Almost surely, 2^166824656444 is an apocalyptic number.

It is an amenable number.

166824656444 is a deficient number, since it is larger than the sum of its proper divisors (142903691716).

166824656444 is a wasteful number, since it uses less digits than its factorization.

166824656444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17284097 (or 17284095 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 56.

The spelling of 166824656444 in words is "one hundred sixty-six billion, eight hundred twenty-four million, six hundred fifty-six thousand, four hundred forty-four".