513203363420 has 96 divisors (see below), whose sum is σ = 1214957753856. Its totient is φ = 180474336000.

The previous prime is 513203363419. The next prime is 513203363423. The reversal of 513203363420 is 24363302315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513203363423) 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, 686897 + ... + 1224023.

It is an arithmetic number, because the mean of its divisors is an integer number (12655809936).

Almost surely, 2^513203363420 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 513203363420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607478876928).

513203363420 is an abundant number, since it is smaller than the sum of its proper divisors (701754390436).

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

513203363420 is a wasteful number, since it uses less digits than its factorization.

513203363420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537291 (or 537289 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 513203363420 its reverse (24363302315), we get a palindrome (537566665735).

The spelling of 513203363420 in words is "five hundred thirteen billion, two hundred three million, three hundred sixty-three thousand, four hundred twenty".