264345210065 has 12 divisors (see below), whose sum is σ = 319172451444. Its totient is φ = 210178662624.

The previous prime is 264345210043. The next prime is 264345210113. The reversal of 264345210065 is 560012543462.

It can be written as a sum of positive squares in 2 ways, for example, as 54254987329 + 210090222736 = 232927^2 + 458356^2 .

It is not a de Polignac number, because 264345210065 - 2⁸ = 264345209809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 862094 + ... + 1127783.

It is an arithmetic number, because the mean of its divisors is an integer number (26597704287).

Almost surely, 2^264345210065 is an apocalyptic number.

It is an amenable number.

264345210065 is a deficient number, since it is larger than the sum of its proper divisors (54827241379).

264345210065 is an equidigital number, since it uses as much as digits as its factorization.

264345210065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990208 (or 1990045 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 264345210065 in words is "two hundred sixty-four billion, three hundred forty-five million, two hundred ten thousand, sixty-five".