521475057330040 has 128 divisors (see below), whose sum is σ = 1301018874462720. Its totient is φ = 186511295347200.

The previous prime is 521475057330013. The next prime is 521475057330089. The reversal of 521475057330040 is 40033750574125.

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, 704529027 + ... + 705268813.

It is an arithmetic number, because the mean of its divisors is an integer number (10164209956740).

Almost surely, 2^{521475057330040} 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 521475057330040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650509437231360).

521475057330040 is an abundant number, since it is smaller than the sum of its proper divisors (779543817132680).

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

521475057330040 is a wasteful number, since it uses less digits than its factorization.

521475057330040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766133 (or 766129 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 46.

The spelling of 521475057330040 in words is "five hundred twenty-one trillion, four hundred seventy-five billion, fifty-seven million, three hundred thirty thousand, forty".