521444104412 has 96 divisors (see below), whose sum is σ = 1217873664000. Its totient is φ = 189205122240.

The previous prime is 521444104399. The next prime is 521444104451. The reversal of 521444104412 is 214401444125.

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, 409862 + ... + 1100397.

It is an arithmetic number, because the mean of its divisors is an integer number (12686184000).

Almost surely, 2^521444104412 is an apocalyptic number.

It is an amenable number.

521444104412 is an abundant number, since it is smaller than the sum of its proper divisors (696429559588).

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

521444104412 is a wasteful number, since it uses less digits than its factorization.

521444104412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510359 (or 1510357 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

Adding to 521444104412 its reverse (214401444125), we get a palindrome (735845548537).

The spelling of 521444104412 in words is "five hundred twenty-one billion, four hundred forty-four million, one hundred four thousand, four hundred twelve".