718857228745009 has 2 divisors, whose sum is σ = 718857228745010. Its totient is φ = 718857228745008.

The previous prime is 718857228744989. The next prime is 718857228745013. The reversal of 718857228745009 is 900547822758817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610694212723984 + 108163016021025 = 24712228^2 + 10400145^2 .

It is a cyclic number.

It is not a de Polignac number, because 718857228745009 - 2²⁷ = 718857094527281 is a prime.

It is not a weakly prime, because it can be changed into another prime (718857228743009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359428614372504 + 359428614372505.

It is an arithmetic number, because the mean of its divisors is an integer number (359428614372505).

Almost surely, 2^{718857228745009} is an apocalyptic number.

It is an amenable number.

718857228745009 is a deficient number, since it is larger than the sum of its proper divisors (1).

718857228745009 is an equidigital number, since it uses as much as digits as its factorization.

718857228745009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 632217600, while the sum is 73.

The spelling of 718857228745009 in words is "seven hundred eighteen trillion, eight hundred fifty-seven billion, two hundred twenty-eight million, seven hundred forty-five thousand, nine".