716656520655 has 24 divisors (see below), whose sum is σ = 1307583828720. Its totient is φ = 362100136320.

The previous prime is 716656520647. The next prime is 716656520683. The reversal of 716656520655 is 556025656617.

716656520655 is a `hidden beast` number, since 7 + 1 + 6 + 6 + 56 + 520 + 65 + 5 = 666.

It is not a de Polignac number, because 716656520655 - 2³ = 716656520647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419096526 + ... + 419098235.

It is an arithmetic number, because the mean of its divisors is an integer number (54482659530).

Almost surely, 2^716656520655 is an apocalyptic number.

716656520655 is a deficient number, since it is larger than the sum of its proper divisors (590927308065).

716656520655 is a wasteful number, since it uses less digits than its factorization.

716656520655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838194791 (or 838194788 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 54.

The spelling of 716656520655 in words is "seven hundred sixteen billion, six hundred fifty-six million, five hundred twenty thousand, six hundred fifty-five".