516531646443 has 4 divisors (see below), whose sum is σ = 688708861928. Its totient is φ = 344354430960.

The previous prime is 516531646429. The next prime is 516531646469. The reversal of 516531646443 is 344646135615.

It is a happy number.

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

It is not a de Polignac number, because 516531646443 - 2¹⁴ = 516531630059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 516531646392 and 516531646401.

It is not an unprimeable number, because it can be changed into a prime (516531642443) 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, 86088607738 + ... + 86088607743.

It is an arithmetic number, because the mean of its divisors is an integer number (172177215482).

Almost surely, 2^516531646443 is an apocalyptic number.

516531646443 is a deficient number, since it is larger than the sum of its proper divisors (172177215485).

516531646443 is a wasteful number, since it uses less digits than its factorization.

516531646443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172177215484.

The product of its digits is 3110400, while the sum is 48.

The spelling of 516531646443 in words is "five hundred sixteen billion, five hundred thirty-one million, six hundred forty-six thousand, four hundred forty-three".