264216757709 has 2 divisors, whose sum is σ = 264216757710. Its totient is φ = 264216757708.

The previous prime is 264216757703. The next prime is 264216757741. The reversal of 264216757709 is 907757612462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152295062500 + 111921695209 = 390250^2 + 334547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264216757709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264216757703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132108378854 + 132108378855.

It is an arithmetic number, because the mean of its divisors is an integer number (132108378855).

Almost surely, 2^264216757709 is an apocalyptic number.

It is an amenable number.

264216757709 is a deficient number, since it is larger than the sum of its proper divisors (1).

264216757709 is an equidigital number, since it uses as much as digits as its factorization.

264216757709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 264216757709 in words is "two hundred sixty-four billion, two hundred sixteen million, seven hundred fifty-seven thousand, seven hundred nine".