539903839371265 has 4 divisors (see below), whose sum is σ = 647884607245524. Its totient is φ = 431923071497008.

The previous prime is 539903839371263. The next prime is 539903839371287. The reversal of 539903839371265 is 562173938309935.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 256053890835856 + 283849948535409 = 16001684^2 + 16847847^2 .

It is a cyclic number.

It is not a de Polignac number, because 539903839371265 - 2¹ = 539903839371263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (539903839371263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53990383937122 + ... + 53990383937131.

It is an arithmetic number, because the mean of its divisors is an integer number (161971151811381).

Almost surely, 2^{539903839371265} is an apocalyptic number.

It is an amenable number.

539903839371265 is a deficient number, since it is larger than the sum of its proper divisors (107980767874259).

539903839371265 is a wasteful number, since it uses less digits than its factorization.

539903839371265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107980767874258.

The product of its (nonzero) digits is 992023200, while the sum is 73.

The spelling of 539903839371265 in words is "five hundred thirty-nine trillion, nine hundred three billion, eight hundred thirty-nine million, three hundred seventy-one thousand, two hundred sixty-five".