718152858721 has 9 divisors (see below), whose sum is σ = 723788675283. Its totient is φ = 712560608760.

The previous prime is 718152858707. The next prime is 718152858757. The reversal of 718152858721 is 127858251817.

The square root of 718152858721 is 847439.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 37032768721 + 681120090000 = 192439^2 + 825300^2 .

It is not a de Polignac number, because 718152858721 - 2⁷ = 718152858593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (718152808721) 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 8 ways as a sum of consecutive naturals, for example, 111011275 + ... + 111017743.

Almost surely, 2^718152858721 is an apocalyptic number.

718152858721 is the 847439-th square number.

718152858721 is the 423720-th centered octagonal number.

It is an amenable number.

718152858721 is a deficient number, since it is larger than the sum of its proper divisors (5635816562).

718152858721 is an frugal number, since it uses more digits than its factorization.

718152858721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13200 (or 6600 counting only the distinct ones).

The product of its digits is 2508800, while the sum is 55.

The spelling of 718152858721 in words is "seven hundred eighteen billion, one hundred fifty-two million, eight hundred fifty-eight thousand, seven hundred twenty-one".