521033475072 has 176 divisors, whose sum is σ = 1535754249792. Its totient is φ = 155725332480.

The previous prime is 521033475049. The next prime is 521033475089. The reversal of 521033475072 is 270574330125.

It is a tau number, because it is divible by the number of its divisors (176).

It is a self number, because there is not a number n which added to its sum of digits gives 521033475072.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2361208 + ... + 2572424.

Almost surely, 2^521033475072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521033475072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767877124896).

521033475072 is an abundant number, since it is smaller than the sum of its proper divisors (1014720774720).

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

521033475072 is a wasteful number, since it uses less digits than its factorization.

521033475072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211324 (or 211306 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 39.

The spelling of 521033475072 in words is "five hundred twenty-one billion, thirty-three million, four hundred seventy-five thousand, seventy-two".