521728834112 has 28 divisors (see below), whose sum is σ = 1043457684480. Its totient is φ = 258810362496.

The previous prime is 521728834111. The next prime is 521728834117. The reversal of 521728834112 is 211438827125.

521728834112 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (521728834111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32086412 + ... + 32102667.

Almost surely, 2^521728834112 is an apocalyptic number.

It is an amenable number.

521728834112 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

521728834112 is a wasteful number, since it uses less digits than its factorization.

521728834112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64189218 (or 64189208 counting only the distinct ones).

The product of its digits is 215040, while the sum is 44.

The spelling of 521728834112 in words is "five hundred twenty-one billion, seven hundred twenty-eight million, eight hundred thirty-four thousand, one hundred twelve".