513161625320 has 32 divisors (see below), whose sum is σ = 1222532109000. Its totient is φ = 193190258688.

The previous prime is 513161625307. The next prime is 513161625349. The reversal of 513161625320 is 23526161315.

It can be written as a sum of positive squares in 4 ways, for example, as 430543320964 + 82618304356 = 656158^2 + 287434^2 .

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, 377324045 + ... + 377325404.

Almost surely, 2^513161625320 is an apocalyptic number.

It is an amenable number.

513161625320 is an abundant number, since it is smaller than the sum of its proper divisors (709370483680).

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

513161625320 is a wasteful number, since it uses less digits than its factorization.

513161625320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754649477 (or 754649473 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 513161625320 its reverse (23526161315), we get a palindrome (536687786635).

The spelling of 513161625320 in words is "five hundred thirteen billion, one hundred sixty-one million, six hundred twenty-five thousand, three hundred twenty".