265243315314545 has 8 divisors (see below), whose sum is σ = 318292643853096. Its totient is φ = 212194208601216.

The previous prime is 265243315314521. The next prime is 265243315314581. The reversal of 265243315314545 is 545413513342562.

It can be written as a sum of positive squares in 4 ways, for example, as 35107983189601 + 230135332124944 = 5925199^2 + 15170212^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265243315314545 - 2¹⁰ = 265243315313521 is a prime.

It is a super-2 number, since 2×265243315314545² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52814252 + ... + 57617981.

It is an arithmetic number, because the mean of its divisors is an integer number (39786580481637).

Almost surely, 2^{265243315314545} is an apocalyptic number.

It is an amenable number.

265243315314545 is a deficient number, since it is larger than the sum of its proper divisors (53049328538551).

265243315314545 is a wasteful number, since it uses less digits than its factorization.

265243315314545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110912611.

The product of its digits is 25920000, while the sum is 53.

The spelling of 265243315314545 in words is "two hundred sixty-five trillion, two hundred forty-three billion, three hundred fifteen million, three hundred fourteen thousand, five hundred forty-five".