264557042345 has 4 divisors (see below), whose sum is σ = 317468450820. Its totient is φ = 211645633872.

The previous prime is 264557042297. The next prime is 264557042383. The reversal of 264557042345 is 543240755462.

264557042345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 199158697984 + 65398344361 = 446272^2 + 255731^2 .

It is a cyclic number.

It is not a de Polignac number, because 264557042345 - 2¹⁰ = 264557041321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264557042345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26455704230 + ... + 26455704239.

It is an arithmetic number, because the mean of its divisors is an integer number (79367112705).

Almost surely, 2^264557042345 is an apocalyptic number.

It is an amenable number.

264557042345 is a deficient number, since it is larger than the sum of its proper divisors (52911408475).

264557042345 is an equidigital number, since it uses as much as digits as its factorization.

264557042345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52911408474.

The product of its (nonzero) digits is 4032000, while the sum is 47.

The spelling of 264557042345 in words is "two hundred sixty-four billion, five hundred fifty-seven million, forty-two thousand, three hundred forty-five".