404512520520 has 64 divisors (see below), whose sum is σ = 1217490563520. Its totient is φ = 107518627584.

The previous prime is 404512520509. The next prime is 404512520537. The reversal of 404512520520 is 25025215404.

404512520520 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5453287 + ... + 5526966.

It is an arithmetic number, because the mean of its divisors is an integer number (19023290055).

Almost surely, 2^404512520520 is an apocalyptic number.

404512520520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404512520520 is an abundant number, since it is smaller than the sum of its proper divisors (812978043000).

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

404512520520 is a wasteful number, since it uses less digits than its factorization.

404512520520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10980574 (or 10980570 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 404512520520 its reverse (25025215404), we get a palindrome (429537735924).

The spelling of 404512520520 in words is "four hundred four billion, five hundred twelve million, five hundred twenty thousand, five hundred twenty".