265565243568 has 40 divisors (see below), whose sum is σ = 709700223600. Its totient is φ = 85469273344.

The previous prime is 265565243543. The next prime is 265565243611. The reversal of 265565243568 is 865342565562.

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, 95388423 + ... + 95391206.

It is an arithmetic number, because the mean of its divisors is an integer number (17742505590).

Almost surely, 2^265565243568 is an apocalyptic number.

It is an amenable number.

265565243568 is an abundant number, since it is smaller than the sum of its proper divisors (444134980032).

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

265565243568 is a wasteful number, since it uses less digits than its factorization.

265565243568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190779669 (or 190779663 counting only the distinct ones).

The product of its digits is 51840000, while the sum is 57.

The spelling of 265565243568 in words is "two hundred sixty-five billion, five hundred sixty-five million, two hundred forty-three thousand, five hundred sixty-eight".