518231142683 has 4 divisors (see below), whose sum is σ = 526726735248. Its totient is φ = 509735550120.

The previous prime is 518231142661. The next prime is 518231142703. The reversal of 518231142683 is 386241132815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 386241132815 = 5 ⋅77248226563.

It is a cyclic number.

It is not a de Polignac number, because 518231142683 - 2⁶ = 518231142619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (518231142613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4247796191 + ... + 4247796312.

It is an arithmetic number, because the mean of its divisors is an integer number (131681683812).

Almost surely, 2^518231142683 is an apocalyptic number.

518231142683 is a deficient number, since it is larger than the sum of its proper divisors (8495592565).

518231142683 is an equidigital number, since it uses as much as digits as its factorization.

518231142683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8495592564.

The product of its digits is 276480, while the sum is 44.

The spelling of 518231142683 in words is "five hundred eighteen billion, two hundred thirty-one million, one hundred forty-two thousand, six hundred eighty-three".