521475644703036 has 96 divisors (see below), whose sum is σ = 1310381480136960. Its totient is φ = 160803574963200.

The previous prime is 521475644703031. The next prime is 521475644703043. The reversal of 521475644703036 is 630307446574125.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521475644703031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78421431 + ... + 84810801.

It is an arithmetic number, because the mean of its divisors is an integer number (13649807084760).

Almost surely, 2^{521475644703036} 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 521475644703036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655190740068480).

521475644703036 is an abundant number, since it is smaller than the sum of its proper divisors (788905835433924).

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

521475644703036 is a wasteful number, since it uses less digits than its factorization.

521475644703036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6396235 (or 6396233 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 57.

The spelling of 521475644703036 in words is "five hundred twenty-one trillion, four hundred seventy-five billion, six hundred forty-four million, seven hundred three thousand, thirty-six".