516605116655 has 4 divisors (see below), whose sum is σ = 619926139992. Its totient is φ = 413284093320.

The previous prime is 516605116619. The next prime is 516605116663. The reversal of 516605116655 is 556611506615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556611506615 = 5 ⋅111322301323.

It is not a de Polignac number, because 516605116655 - 2¹⁸ = 516604854511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51660511661 + ... + 51660511670.

It is an arithmetic number, because the mean of its divisors is an integer number (154981534998).

Almost surely, 2^516605116655 is an apocalyptic number.

516605116655 is a deficient number, since it is larger than the sum of its proper divisors (103321023337).

516605116655 is a wasteful number, since it uses less digits than its factorization.

516605116655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103321023336.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 516605116655 in words is "five hundred sixteen billion, six hundred five million, one hundred sixteen thousand, six hundred fifty-five".