716778535438257 has 8 divisors (see below), whose sum is σ = 965167136828160. Its totient is φ = 473121145503600.

The previous prime is 716778535438253. The next prime is 716778535438333. The reversal of 716778535438257 is 752834535877617.

716778535438257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 716778535438257 - 2² = 716778535438253 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1182802863457 + ... + 1182802864062.

It is an arithmetic number, because the mean of its divisors is an integer number (120645892103520).

Almost surely, 2^{716778535438257} is an apocalyptic number.

It is an amenable number.

716778535438257 is a deficient number, since it is larger than the sum of its proper divisors (248388601389903).

716778535438257 is a wasteful number, since it uses less digits than its factorization.

716778535438257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365605727623.

The product of its digits is 8297856000, while the sum is 78.

The spelling of 716778535438257 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-seven".