521044020400230 has 256 divisors, whose sum is σ = 1406068797680640. Its totient is φ = 137294817232896.

The previous prime is 521044020400217. The next prime is 521044020400237. The reversal of 521044020400230 is 32004020440125.

521044020400230 is a `hidden beast` number, since 5 + 2 + 1 + 0 + 4 + 4 + 0 + 20 + 400 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 521044020400194 and 521044020400203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521044020400237) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7322832334 + ... + 7322903486.

It is an arithmetic number, because the mean of its divisors is an integer number (5492456240940).

Almost surely, 2^{521044020400230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521044020400230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703034398840320).

521044020400230 is an abundant number, since it is smaller than the sum of its proper divisors (885024777280410).

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

521044020400230 is a wasteful number, since it uses less digits than its factorization.

521044020400230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72292 (or 72286 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 521044020400230 its reverse (32004020440125), we get a palindrome (553048040840355).

The spelling of 521044020400230 in words is "five hundred twenty-one trillion, forty-four billion, twenty million, four hundred thousand, two hundred thirty".