264440312502656 has 64 divisors (see below), whose sum is σ = 544877097782400. Its totient is φ = 127703603896320.

The previous prime is 264440312502557. The next prime is 264440312502697. The reversal of 264440312502656 is 656205213044462.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 63445145 + ... + 67484568.

It is an arithmetic number, because the mean of its divisors is an integer number (8513704652850).

Almost surely, 2^{264440312502656} is an apocalyptic number.

It is an amenable number.

264440312502656 is an abundant number, since it is smaller than the sum of its proper divisors (280436785279744).

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

264440312502656 is a wasteful number, since it uses less digits than its factorization.

264440312502656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130930267 (or 130930255 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 50.

The spelling of 264440312502656 in words is "two hundred sixty-four trillion, four hundred forty billion, three hundred twelve million, five hundred two thousand, six hundred fifty-six".