521033400004 has 48 divisors (see below), whose sum is σ = 1002619695168. Its totient is φ = 235433847168.

The previous prime is 521033399941. The next prime is 521033400011. The reversal of 521033400004 is 400004330125.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084639 + ... + 1489465.

It is an arithmetic number, because the mean of its divisors is an integer number (20887910316).

Almost surely, 2^521033400004 is an apocalyptic number.

It is an amenable number.

521033400004 is a deficient number, since it is larger than the sum of its proper divisors (481586295164).

521033400004 is a wasteful number, since it uses less digits than its factorization.

521033400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405364 (or 405362 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 521033400004 its reverse (400004330125), we get a palindrome (921037730129).

The spelling of 521033400004 in words is "five hundred twenty-one billion, thirty-three million, four hundred thousand, four".