265640350536023 has 4 divisors (see below), whose sum is σ = 272119383475968. Its totient is φ = 259161317596080.

The previous prime is 265640350535993. The next prime is 265640350536089. The reversal of 265640350536023 is 320635053046562.

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 265640350536023 - 2²⁸ = 265640082100567 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 (265640350532023) 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, 3239516469911 + ... + 3239516469992.

It is an arithmetic number, because the mean of its divisors is an integer number (68029845868992).

Almost surely, 2^{265640350536023} is an apocalyptic number.

265640350536023 is a deficient number, since it is larger than the sum of its proper divisors (6479032939945).

265640350536023 is an equidigital number, since it uses as much as digits as its factorization.

265640350536023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479032939944.

The product of its (nonzero) digits is 11664000, while the sum is 50.

The spelling of 265640350536023 in words is "two hundred sixty-five trillion, six hundred forty billion, three hundred fifty million, five hundred thirty-six thousand, twenty-three".