265553321223 has 16 divisors (see below), whose sum is σ = 354446607456. Its totient is φ = 176847864960.

The previous prime is 265553321213. The next prime is 265553321237. The reversal of 265553321223 is 322123355562.

It is not a de Polignac number, because 265553321223 - 2⁴ = 265553321207 is a prime.

It is a super-4 number, since 4×265553321223⁴ (a number of 47 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265553321203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27436861 + ... + 27446537.

It is an arithmetic number, because the mean of its divisors is an integer number (22152912966).

Almost surely, 2^265553321223 is an apocalyptic number.

265553321223 is a deficient number, since it is larger than the sum of its proper divisors (88893286233).

265553321223 is a wasteful number, since it uses less digits than its factorization.

265553321223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18434.

The product of its digits is 324000, while the sum is 39.

Adding to 265553321223 its reverse (322123355562), we get a palindrome (587676676785).

The spelling of 265553321223 in words is "two hundred sixty-five billion, five hundred fifty-three million, three hundred twenty-one thousand, two hundred twenty-three".