716778535438256 has 20 divisors (see below), whose sum is σ = 1398895335134232. Its totient is φ = 355773287661696.

The previous prime is 716778535438253. The next prime is 716778535438333. The reversal of 716778535438256 is 652834535877617.

It is a super-2 number, since 2×716778535438256² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (716778535438253) 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, 163498751330 + ... + 163498755713.

Almost surely, 2^{716778535438256} is an apocalyptic number.

It is an amenable number.

716778535438256 is a deficient number, since it is larger than the sum of its proper divisors (682116799695976).

716778535438256 is a wasteful number, since it uses less digits than its factorization.

716778535438256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326997507188 (or 326997507182 counting only the distinct ones).

The product of its digits is 7112448000, while the sum is 77.

The spelling of 716778535438256 in words is "seven hundred sixteen trillion, seven hundred seventy-eight billion, five hundred thirty-five million, four hundred thirty-eight thousand, two hundred fifty-six".