404160802040 has 128 divisors (see below), whose sum is σ = 990843494400. Its totient is φ = 147841666560.

The previous prime is 404160801911. The next prime is 404160802051. The reversal of 404160802040 is 40208061404.

It is a junction number, because it is equal to n+sod(n) for n = 404160801994 and 404160802012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3514655 + ... + 3627825.

It is an arithmetic number, because the mean of its divisors is an integer number (7740964800).

Almost surely, 2^404160802040 is an apocalyptic number.

404160802040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404160802040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495421747200).

404160802040 is an abundant number, since it is smaller than the sum of its proper divisors (586682692360).

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

404160802040 is a wasteful number, since it uses less digits than its factorization.

404160802040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113365 (or 113361 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 404160802040 its reverse (40208061404), we get a palindrome (444368863444).

The spelling of 404160802040 in words is "four hundred four billion, one hundred sixty million, eight hundred two thousand, forty".