404837685085 has 16 divisors (see below), whose sum is σ = 489827923200. Its totient is φ = 321197187456.

The previous prime is 404837685073. The next prime is 404837685089. The reversal of 404837685085 is 580586738404.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404837685085 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404837685089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185640 + ... + 918769.

It is an arithmetic number, because the mean of its divisors is an integer number (30614245200).

Almost surely, 2^404837685085 is an apocalyptic number.

It is an amenable number.

404837685085 is a deficient number, since it is larger than the sum of its proper divisors (84990238115).

404837685085 is a wasteful number, since it uses less digits than its factorization.

404837685085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105020.

The product of its (nonzero) digits is 25804800, while the sum is 58.

The spelling of 404837685085 in words is "four hundred four billion, eight hundred thirty-seven million, six hundred eighty-five thousand, eighty-five".