265312346002261 has 4 divisors (see below), whose sum is σ = 270957289534272. Its totient is φ = 259667402470252.

The previous prime is 265312346002247. The next prime is 265312346002283. The reversal of 265312346002261 is 162200643213562.

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 265312346002261 - 2⁵ = 265312346002229 is a prime.

It is a super-2 number, since 2×265312346002261² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265312346002201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2822471765935 + ... + 2822471766028.

It is an arithmetic number, because the mean of its divisors is an integer number (67739322383568).

Almost surely, 2^{265312346002261} is an apocalyptic number.

It is an amenable number.

265312346002261 is a deficient number, since it is larger than the sum of its proper divisors (5644943532011).

265312346002261 is an equidigital number, since it uses as much as digits as its factorization.

265312346002261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5644943532010.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 265312346002261 in words is "two hundred sixty-five trillion, three hundred twelve billion, three hundred forty-six million, two thousand, two hundred sixty-one".