265604065273 has 4 divisors (see below), whose sum is σ = 265747870080. Its totient is φ = 265460260468.

The previous prime is 265604065241. The next prime is 265604065291. The reversal of 265604065273 is 372560406562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 265604065273 - 2⁵ = 265604065241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265604065873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71899633 + ... + 71903326.

It is an arithmetic number, because the mean of its divisors is an integer number (66436967520).

Almost surely, 2^265604065273 is an apocalyptic number.

It is an amenable number.

265604065273 is a deficient number, since it is larger than the sum of its proper divisors (143804807).

265604065273 is a wasteful number, since it uses less digits than its factorization.

265604065273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143804806.

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 265604065273 in words is "two hundred sixty-five billion, six hundred four million, sixty-five thousand, two hundred seventy-three".