265481084563 has 16 divisors (see below), whose sum is σ = 267817680000. Its totient is φ = 263157414912.

The previous prime is 265481084537. The next prime is 265481084593. The reversal of 265481084563 is 365480184562.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265481084563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 265481084563.

It is not an unprimeable number, because it can be changed into a prime (265481084593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57102663 + ... + 57107311.

It is an arithmetic number, because the mean of its divisors is an integer number (16738605000).

Almost surely, 2^265481084563 is an apocalyptic number.

265481084563 is a deficient number, since it is larger than the sum of its proper divisors (2336595437).

265481084563 is a wasteful number, since it uses less digits than its factorization.

265481084563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5934.

The product of its (nonzero) digits is 5529600, while the sum is 52.

Subtracting 265481084563 from its reverse (365480184562), we obtain a palindrome (99999099999).

It can be divided in two parts, 26548 and 1084563, that added together give a palindrome (1111111).

The spelling of 265481084563 in words is "two hundred sixty-five billion, four hundred eighty-one million, eighty-four thousand, five hundred sixty-three".