516663255049787 has 4 divisors (see below), whose sum is σ = 516666766640376. Its totient is φ = 516659743459200.

The previous prime is 516663255049771. The next prime is 516663255049789. The reversal of 516663255049787 is 787940552366615.

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 516663255049787 - 2⁴ = 516663255049771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516663255049789) 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, 1755574589 + ... + 1755868862.

It is an arithmetic number, because the mean of its divisors is an integer number (129166691660094).

It is a 1-persistent number, because it is pandigital, but 2⋅516663255049787 = 1033326510099574 is not.

Almost surely, 2^{516663255049787} is an apocalyptic number.

516663255049787 is a deficient number, since it is larger than the sum of its proper divisors (3511590589).

516663255049787 is a wasteful number, since it uses less digits than its factorization.

516663255049787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511590588.

The product of its (nonzero) digits is 2286144000, while the sum is 74.

The spelling of 516663255049787 in words is "five hundred sixteen trillion, six hundred sixty-three billion, two hundred fifty-five million, forty-nine thousand, seven hundred eighty-seven".