716678917291 has 4 divisors (see below), whose sum is σ = 725750802400. Its totient is φ = 707607032184.

The previous prime is 716678917237. The next prime is 716678917303. The reversal of 716678917291 is 192719876617.

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 716678917291 - 2¹⁹ = 716678393003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (716678917391) 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, 4535942436 + ... + 4535942593.

It is an arithmetic number, because the mean of its divisors is an integer number (181437700600).

Almost surely, 2^716678917291 is an apocalyptic number.

716678917291 is a deficient number, since it is larger than the sum of its proper divisors (9071885109).

716678917291 is an equidigital number, since it uses as much as digits as its factorization.

716678917291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9071885108.

The product of its digits is 16003008, while the sum is 64.

The spelling of 716678917291 in words is "seven hundred sixteen billion, six hundred seventy-eight million, nine hundred seventeen thousand, two hundred ninety-one".