718472272505 has 16 divisors (see below), whose sum is σ = 932472187920. Its totient is φ = 528287029248.

The previous prime is 718472272487. The next prime is 718472272517. The reversal of 718472272505 is 505272274817.

It can be written as a sum of positive squares in 8 ways, for example, as 152703537529 + 565768734976 = 390773^2 + 752176^2 .

It is a cyclic number.

It is not a de Polignac number, because 718472272505 - 2²⁰ = 718471223929 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23704640 + ... + 23734929.

It is an arithmetic number, because the mean of its divisors is an integer number (58279511745).

Almost surely, 2^718472272505 is an apocalyptic number.

It is an amenable number.

718472272505 is a deficient number, since it is larger than the sum of its proper divisors (213999915415).

718472272505 is a wasteful number, since it uses less digits than its factorization.

718472272505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47439820.

The product of its (nonzero) digits is 2195200, while the sum is 50.

The spelling of 718472272505 in words is "seven hundred eighteen billion, four hundred seventy-two million, two hundred seventy-two thousand, five hundred five".