404723664166 has 4 divisors (see below), whose sum is σ = 607085496252. Its totient is φ = 202361832082.

The previous prime is 404723664161. The next prime is 404723664167. The reversal of 404723664166 is 661466327404.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404723664161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101180916040 + ... + 101180916043.

It is an arithmetic number, because the mean of its divisors is an integer number (151771374063).

Almost surely, 2^404723664166 is an apocalyptic number.

404723664166 is a deficient number, since it is larger than the sum of its proper divisors (202361832086).

404723664166 is a wasteful number, since it uses less digits than its factorization.

404723664166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202361832085.

The product of its (nonzero) digits is 3483648, while the sum is 49.

The spelling of 404723664166 in words is "four hundred four billion, seven hundred twenty-three million, six hundred sixty-four thousand, one hundred sixty-six".