513232312520 has 32 divisors (see below), whose sum is σ = 1171037113920. Its totient is φ = 202401474240.

The previous prime is 513232312513. The next prime is 513232312547. The reversal of 513232312520 is 25213232315.

It is a super-2 number, since 2×513232312520² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90354962 + ... + 90360641.

It is an arithmetic number, because the mean of its divisors is an integer number (36594909810).

Almost surely, 2^513232312520 is an apocalyptic number.

It is an amenable number.

513232312520 is an abundant number, since it is smaller than the sum of its proper divisors (657804801400).

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

513232312520 is a wasteful number, since it uses less digits than its factorization.

513232312520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180715685 (or 180715681 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 513232312520 its reverse (25213232315), we get a palindrome (538445544835).

The spelling of 513232312520 in words is "five hundred thirteen billion, two hundred thirty-two million, three hundred twelve thousand, five hundred twenty".