513330444420 has 96 divisors (see below), whose sum is σ = 1448067317760. Its totient is φ = 135865614720.

The previous prime is 513330444401. The next prime is 513330444421. The reversal of 513330444420 is 24444033315.

It is not an unprimeable number, because it can be changed into a prime (513330444421) 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, 43120189 + ... + 43132091.

It is an arithmetic number, because the mean of its divisors is an integer number (15084034560).

Almost surely, 2^513330444420 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 513330444420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (724033658880).

513330444420 is an abundant number, since it is smaller than the sum of its proper divisors (934736873340).

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

513330444420 is a wasteful number, since it uses less digits than its factorization.

513330444420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17225 (or 17223 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 513330444420 its reverse (24444033315), we get a palindrome (537774477735).

The spelling of 513330444420 in words is "five hundred thirteen billion, three hundred thirty million, four hundred forty-four thousand, four hundred twenty".