265660445303220 has 48 divisors (see below), whose sum is σ = 811471905655488. Its totient is φ = 64402532194560.

The previous prime is 265660445303171. The next prime is 265660445303233. The reversal of 265660445303220 is 22303544066562.

It is a self number, because there is not a number n which added to its sum of digits gives 265660445303220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201257912449 + ... + 201257913768.

It is an arithmetic number, because the mean of its divisors is an integer number (16905664701156).

Almost surely, 2^{265660445303220} is an apocalyptic number.

265660445303220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265660445303220 is an abundant number, since it is smaller than the sum of its proper divisors (545811460352268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265660445303220 is a wasteful number, since it uses less digits than its factorization.

265660445303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402515826240 (or 402515826238 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 48.

Adding to 265660445303220 its reverse (22303544066562), we get a palindrome (287963989369782).

The spelling of 265660445303220 in words is "two hundred sixty-five trillion, six hundred sixty billion, four hundred forty-five million, three hundred three thousand, two hundred twenty".