718307272369 has 2 divisors, whose sum is σ = 718307272370. Its totient is φ = 718307272368.

The previous prime is 718307272349. The next prime is 718307272387. The reversal of 718307272369 is 963272703817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514985640625 + 203321631744 = 717625^2 + 450912^2 .

It is a cyclic number.

It is not a de Polignac number, because 718307272369 - 2¹⁷ = 718307141297 is a prime.

It is a super-2 number, since 2×718307272369² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (718307272349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359153636184 + 359153636185.

It is an arithmetic number, because the mean of its divisors is an integer number (359153636185).

Almost surely, 2^718307272369 is an apocalyptic number.

It is an amenable number.

718307272369 is a deficient number, since it is larger than the sum of its proper divisors (1).

718307272369 is an equidigital number, since it uses as much as digits as its factorization.

718307272369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 718307272369 in words is "seven hundred eighteen billion, three hundred seven million, two hundred seventy-two thousand, three hundred sixty-nine".