264435310205256 has 128 divisors (see below), whose sum is σ = 700653402881280. Its totient is φ = 82879827419136.

The previous prime is 264435310205177. The next prime is 264435310205257. The reversal of 264435310205256 is 652502013534462.

It is not an unprimeable number, because it can be changed into a prime (264435310205257) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1938706596 + ... + 1938842988.

It is an arithmetic number, because the mean of its divisors is an integer number (5473854710010).

Almost surely, 2^{264435310205256} is an apocalyptic number.

It is an amenable number.

264435310205256 is an abundant number, since it is smaller than the sum of its proper divisors (436218092676024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264435310205256 is a wasteful number, since it uses less digits than its factorization.

264435310205256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140983 (or 140979 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 48.

The spelling of 264435310205256 in words is "two hundred sixty-four trillion, four hundred thirty-five billion, three hundred ten million, two hundred five thousand, two hundred fifty-six".