516331566643 has 8 divisors (see below), whose sum is σ = 526084370208. Its totient is φ = 506579159424.

The previous prime is 516331566617. The next prime is 516331566689. The reversal of 516331566643 is 346665133615.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 516331566643 - 2²⁵ = 516298012211 is a prime.

It is a super-3 number, since 3×516331566643³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516331566613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4750555 + ... + 4858027.

It is an arithmetic number, because the mean of its divisors is an integer number (65760546276).

Almost surely, 2^516331566643 is an apocalyptic number.

516331566643 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

516331566643 is a deficient number, since it is larger than the sum of its proper divisors (9752803565).

516331566643 is a wasteful number, since it uses less digits than its factorization.

516331566643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198173.

The product of its digits is 3499200, while the sum is 49.

The spelling of 516331566643 in words is "five hundred sixteen billion, three hundred thirty-one million, five hundred sixty-six thousand, six hundred forty-three".