265156030243 has 4 divisors (see below), whose sum is σ = 285552647968. Its totient is φ = 244759412520.

The previous prime is 265156030213. The next prime is 265156030247. The reversal of 265156030243 is 342030651562.

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

It is a cyclic number.

It is not a de Polignac number, because 265156030243 - 2¹³ = 265156022051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265156030247) 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, 10198308843 + ... + 10198308868.

It is an arithmetic number, because the mean of its divisors is an integer number (71388161992).

Almost surely, 2^265156030243 is an apocalyptic number.

265156030243 is a deficient number, since it is larger than the sum of its proper divisors (20396617725).

265156030243 is a wasteful number, since it uses less digits than its factorization.

265156030243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20396617724.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 265156030243 in words is "two hundred sixty-five billion, one hundred fifty-six million, thirty thousand, two hundred forty-three".