404385808877808 has 80 divisors (see below), whose sum is σ = 1106217940332960. Its totient is φ = 126854228901888.

The previous prime is 404385808877801. The next prime is 404385808877839. The reversal of 404385808877808 is 808778808583404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404385808877801) 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, 14554843 + ... + 31947066.

It is an arithmetic number, because the mean of its divisors is an integer number (13827724254162).

Almost surely, 2^{404385808877808} is an apocalyptic number.

404385808877808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

404385808877808 is an abundant number, since it is smaller than the sum of its proper divisors (701832131455152).

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

404385808877808 is a wasteful number, since it uses less digits than its factorization.

404385808877808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46512594 (or 46512588 counting only the distinct ones).

The product of its (nonzero) digits is 3082813440, while the sum is 78.

The spelling of 404385808877808 in words is "four hundred four trillion, three hundred eighty-five billion, eight hundred eight million, eight hundred seventy-seven thousand, eight hundred eight".