716988889617 has 64 divisors (see below), whose sum is σ = 1290732226560. Its totient is φ = 341889868800.

The previous prime is 716988889601. The next prime is 716988889627.

716988889617 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 716988889617 - 2⁴ = 716988889601 is a prime.

It is a super-2 number, since 2×716988889617² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (716988889627) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 129384 + ... + 1204457.

It is an arithmetic number, because the mean of its divisors is an integer number (20167691040).

Almost surely, 2^716988889617 is an apocalyptic number.

716988889617 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

716988889617 is a deficient number, since it is larger than the sum of its proper divisors (573743336943).

716988889617 is a wasteful number, since it uses less digits than its factorization.

716988889617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334054.

The product of its digits is 585252864, while the sum is 78.

The spelling of 716988889617 in words is "seven hundred sixteen billion, nine hundred eighty-eight million, eight hundred eighty-nine thousand, six hundred seventeen".