404200340985 has 64 divisors (see below), whose sum is σ = 763317043200. Its totient is φ = 178813696512.

The previous prime is 404200340969. The next prime is 404200340993. The reversal of 404200340985 is 589043002404.

It is not a de Polignac number, because 404200340985 - 2⁴ = 404200340969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20925 + ... + 899354.

It is an arithmetic number, because the mean of its divisors is an integer number (11926828800).

Almost surely, 2^404200340985 is an apocalyptic number.

It is an amenable number.

404200340985 is a deficient number, since it is larger than the sum of its proper divisors (359116702215).

404200340985 is a wasteful number, since it uses less digits than its factorization.

404200340985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920430.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 404200340985 in words is "four hundred four billion, two hundred million, three hundred forty thousand, nine hundred eighty-five".