404628652866 has 16 divisors (see below), whose sum is σ = 810694714464. Its totient is φ = 134636649504.

The previous prime is 404628652849. The next prime is 404628652877. The reversal of 404628652866 is 668256826404.

It is a Curzon 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, 59888371 + ... + 59895126.

It is an arithmetic number, because the mean of its divisors is an integer number (50668419654).

Almost surely, 2^404628652866 is an apocalyptic number.

404628652866 is an abundant number, since it is smaller than the sum of its proper divisors (406066061598).

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

404628652866 is a wasteful number, since it uses less digits than its factorization.

404628652866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119784065.

The product of its (nonzero) digits is 26542080, while the sum is 57.

The spelling of 404628652866 in words is "four hundred four billion, six hundred twenty-eight million, six hundred fifty-two thousand, eight hundred sixty-six".