265520905768 has 8 divisors (see below), whose sum is σ = 497851698330. Its totient is φ = 132760452880.

The previous prime is 265520905723. The next prime is 265520905801. The reversal of 265520905768 is 867509025562.

It can be written as a sum of positive squares in only one way, i.e., 260301999204 + 5218906564 = 510198^2 + 72242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16595056603 + ... + 16595056618.

Almost surely, 2^265520905768 is an apocalyptic number.

It is an amenable number.

265520905768 is a deficient number, since it is larger than the sum of its proper divisors (232330792562).

265520905768 is a wasteful number, since it uses less digits than its factorization.

265520905768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33190113227 (or 33190113223 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 265520905768 in words is "two hundred sixty-five billion, five hundred twenty million, nine hundred five thousand, seven hundred sixty-eight".