512130565723 has 4 divisors (see below), whose sum is σ = 585292075120. Its totient is φ = 438969056328.

The previous prime is 512130565679. The next prime is 512130565753. The reversal of 512130565723 is 327565031215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 512130565723 - 2⁹ = 512130565211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512130565753) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 36580754688 + ... + 36580754701.

It is an arithmetic number, because the mean of its divisors is an integer number (146323018780).

Almost surely, 2^512130565723 is an apocalyptic number.

512130565723 is a deficient number, since it is larger than the sum of its proper divisors (73161509397).

512130565723 is an equidigital number, since it uses as much as digits as its factorization.

512130565723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73161509396.

The product of its (nonzero) digits is 189000, while the sum is 40.

Adding to 512130565723 its reverse (327565031215), we get a palindrome (839695596938).

The spelling of 512130565723 in words is "five hundred twelve billion, one hundred thirty million, five hundred sixty-five thousand, seven hundred twenty-three".