264440623261165 has 32 divisors (see below), whose sum is σ = 343983390944256. Its totient is φ = 193997870964480.

The previous prime is 264440623261163. The next prime is 264440623261169. The reversal of 264440623261165 is 561162326044462.

It is not a de Polignac number, because 264440623261165 - 2¹ = 264440623261163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264440623261163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11783100 + ... + 25840330.

It is an arithmetic number, because the mean of its divisors is an integer number (10749480967008).

Almost surely, 2^{264440623261165} is an apocalyptic number.

It is an amenable number.

264440623261165 is a deficient number, since it is larger than the sum of its proper divisors (79542767683091).

264440623261165 is a wasteful number, since it uses less digits than its factorization.

264440623261165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14059149.

The product of its (nonzero) digits is 9953280, while the sum is 52.

The spelling of 264440623261165 in words is "two hundred sixty-four trillion, four hundred forty billion, six hundred twenty-three million, two hundred sixty-one thousand, one hundred sixty-five".