265553321012 has 24 divisors (see below), whose sum is σ = 531396808320. Its totient is φ = 113746387680.

The previous prime is 265553320969. The next prime is 265553321021. The reversal of 265553321012 is 210123355562.

265553321012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 2538587 + ... + 2641122.

It is an arithmetic number, because the mean of its divisors is an integer number (22141533680).

Almost surely, 2^265553321012 is an apocalyptic number.

It is an amenable number.

265553321012 is an abundant number, since it is smaller than the sum of its proper divisors (265843487308).

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

265553321012 is a wasteful number, since it uses less digits than its factorization.

265553321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181551 (or 5181549 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 265553321012 its reverse (210123355562), we get a palindrome (475676676574).

The spelling of 265553321012 in words is "two hundred sixty-five billion, five hundred fifty-three million, three hundred twenty-one thousand, twelve".