404011404054520 has 64 divisors (see below), whose sum is σ = 910988366371200. Its totient is φ = 161255648200320.

The previous prime is 404011404054499. The next prime is 404011404054521. The reversal of 404011404054520 is 25450404110404.

It is a super-2 number, since 2×404011404054520² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404011404054521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1279253991 + ... + 1279569769.

It is an arithmetic number, because the mean of its divisors is an integer number (14234193224550).

Almost surely, 2^{404011404054520} is an apocalyptic number.

404011404054520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404011404054520 is an abundant number, since it is smaller than the sum of its proper divisors (506976962316680).

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

404011404054520 is a wasteful number, since it uses less digits than its factorization.

404011404054520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384748 (or 384744 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 404011404054520 its reverse (25450404110404), we get a palindrome (429461808164924).

The spelling of 404011404054520 in words is "four hundred four trillion, eleven billion, four hundred four million, fifty-four thousand, five hundred twenty".