265942364416 has 81 divisors (see below), whose sum is σ = 536825046261. Its totient is φ = 131490103296.

The previous prime is 265942364399. The next prime is 265942364491. The reversal of 265942364416 is 614463249562.

It is a happy number.

The square root of 265942364416 is 515696.

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

265942364416 is digitally balanced in base 2, 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., 64434745600 + 201507618816 = 253840^2 + 448896^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1377939616 + ... + 1377939808.

Almost surely, 2^265942364416 is an apocalyptic number.

265942364416 is the 515696-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265942364416

265942364416 is an abundant number, since it is smaller than the sum of its proper divisors (270882681845).

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

265942364416 is an frugal number, since it uses more digits than its factorization.

265942364416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 362 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 52.

The spelling of 265942364416 in words is "two hundred sixty-five billion, nine hundred forty-two million, three hundred sixty-four thousand, four hundred sixteen".