716481655891 has 4 divisors (see below), whose sum is σ = 716564986000. Its totient is φ = 716398325784.

The previous prime is 716481655867. The next prime is 716481655921. The reversal of 716481655891 is 198556184617.

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 716481655891 - 2⁷ = 716481655763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (716481155891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41652156 + ... + 41669353.

It is an arithmetic number, because the mean of its divisors is an integer number (179141246500).

Almost surely, 2^716481655891 is an apocalyptic number.

716481655891 is a deficient number, since it is larger than the sum of its proper divisors (83330109).

716481655891 is an equidigital number, since it uses as much as digits as its factorization.

716481655891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83330108.

The product of its digits is 14515200, while the sum is 61.

The spelling of 716481655891 in words is "seven hundred sixteen billion, four hundred eighty-one million, six hundred fifty-five thousand, eight hundred ninety-one".