264964323493 has 2 divisors, whose sum is σ = 264964323494. Its totient is φ = 264964323492.

The previous prime is 264964323431. The next prime is 264964323539. The reversal of 264964323493 is 394323469462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161770470849 + 103193852644 = 402207^2 + 321238^2 .

It is a cyclic number.

It is not a de Polignac number, because 264964323493 - 2⁹ = 264964322981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264964326493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132482161746 + 132482161747.

It is an arithmetic number, because the mean of its divisors is an integer number (132482161747).

Almost surely, 2^264964323493 is an apocalyptic number.

It is an amenable number.

264964323493 is a deficient number, since it is larger than the sum of its proper divisors (1).

264964323493 is an equidigital number, since it uses as much as digits as its factorization.

264964323493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20155392, while the sum is 55.

The spelling of 264964323493 in words is "two hundred sixty-four billion, nine hundred sixty-four million, three hundred twenty-three thousand, four hundred ninety-three".