265513040556 has 96 divisors (see below), whose sum is σ = 641205626880. Its totient is φ = 85473273600.

The previous prime is 265513040449. The next prime is 265513040603. The reversal of 265513040556 is 655040315562.

265513040556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10454185 + ... + 10479551.

It is an arithmetic number, because the mean of its divisors is an integer number (6679225280).

Almost surely, 2^265513040556 is an apocalyptic number.

It is an amenable number.

265513040556 is an abundant number, since it is smaller than the sum of its proper divisors (375692586324).

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

265513040556 is a wasteful number, since it uses less digits than its factorization.

265513040556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25695 (or 25693 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 265513040556 in words is "two hundred sixty-five billion, five hundred thirteen million, forty thousand, five hundred fifty-six".