513161125460 has 24 divisors (see below), whose sum is σ = 1080127153896. Its totient is φ = 204790394880.

The previous prime is 513161125427. The next prime is 513161125489. The reversal of 513161125460 is 64521161315.

It can be written as a sum of positive squares in 4 ways, for example, as 2630869264 + 510530256196 = 51292^2 + 714514^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 513161125460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29619581 + ... + 29636900.

It is an arithmetic number, because the mean of its divisors is an integer number (45005298079).

Almost surely, 2^513161125460 is an apocalyptic number.

It is an amenable number.

513161125460 is an abundant number, since it is smaller than the sum of its proper divisors (566966028436).

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

513161125460 is a wasteful number, since it uses less digits than its factorization.

513161125460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59256923 (or 59256921 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

Adding to 513161125460 its reverse (64521161315), we get a palindrome (577682286775).

The spelling of 513161125460 in words is "five hundred thirteen billion, one hundred sixty-one million, one hundred twenty-five thousand, four hundred sixty".