718291845441 has 15 divisors (see below), whose sum is σ = 1073015262451. Its totient is φ = 478856145168.

The previous prime is 718291845391. The next prime is 718291845443. The reversal of 718291845441 is 144548192817.

It is a happy number.

The square root of 718291845441 is 847521.

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

718291845441 is a `hidden beast` number, since 7 + 1 + 8 + 2 + 91 + 8 + 4 + 544 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 136366979841 + 581924865600 = 369279^2 + 762840^2 .

It is not a de Polignac number, because 718291845441 - 2³³ = 709701910849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (718291845443) 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 14 ways as a sum of consecutive naturals, for example, 7580605 + ... + 7674773.

Almost surely, 2^718291845441 is an apocalyptic number.

718291845441 is the 847521-st square number.

718291845441 is the 423761-st centered octagonal number.

It is an amenable number.

718291845441 is a deficient number, since it is larger than the sum of its proper divisors (354723417010).

718291845441 is an frugal number, since it uses more digits than its factorization.

718291845441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188350 (or 94172 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The spelling of 718291845441 in words is "seven hundred eighteen billion, two hundred ninety-one million, eight hundred forty-five thousand, four hundred forty-one".