265826861056 has 171 divisors, whose sum is σ = 571893832461. Its totient is φ = 123542175744.

The previous prime is 265826861039. The next prime is 265826861089. The reversal of 265826861056 is 650168628562.

It is a happy number.

The square root of 265826861056 is 515584.

It is a perfect power (a square), and thus also a powerful number.

265826861056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 191633817600 + 74193043456 = 437760^2 + 272384^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265826860988 and 265826861006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5015601126 + ... + 5015601178.

Almost surely, 2^265826861056 is an apocalyptic number.

265826861056 is the 515584-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265826861056

265826861056 is an abundant number, since it is smaller than the sum of its proper divisors (306066971405).

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

265826861056 is an frugal number, since it uses more digits than its factorization.

265826861056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 265826861056 in words is "two hundred sixty-five billion, eight hundred twenty-six million, eight hundred sixty-one thousand, fifty-six".