516706465445551 has 4 divisors (see below), whose sum is σ = 517354779706632. Its totient is φ = 516058151184472.

The previous prime is 516706465445531. The next prime is 516706465445557. The reversal of 516706465445551 is 155544564607615.

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 516706465445551 - 2¹⁹ = 516706464921263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516706465445557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324157129345 + ... + 324157130938.

It is an arithmetic number, because the mean of its divisors is an integer number (129338694926658).

Almost surely, 2^{516706465445551} is an apocalyptic number.

516706465445551 is a deficient number, since it is larger than the sum of its proper divisors (648314261081).

516706465445551 is an equidigital number, since it uses as much as digits as its factorization.

516706465445551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648314261080.

The product of its (nonzero) digits is 302400000, while the sum is 64.

The spelling of 516706465445551 in words is "five hundred sixteen trillion, seven hundred six billion, four hundred sixty-five million, four hundred forty-five thousand, five hundred fifty-one".