1273283328265 has 8 divisors (see below), whose sum is σ = 1645473839688. Its totient is φ = 940270765440.

The previous prime is 1273283328241. The next prime is 1273283328271. The reversal of 1273283328265 is 5628233823721.

It can be written as a sum of positive squares in 4 ways, for example, as 10707489529 + 1262575838736 = 103477^2 + 1123644^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1273283328265 - 2³³ = 1264693393673 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 9794487076 + ... + 9794487205.

It is an arithmetic number, because the mean of its divisors is an integer number (205684229961).

Almost surely, 2^{1273283328265} is an apocalyptic number.

It is an amenable number.

1273283328265 is a deficient number, since it is larger than the sum of its proper divisors (372190511423).

1273283328265 is a wasteful number, since it uses less digits than its factorization.

1273283328265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19588974299.

The product of its digits is 5806080, while the sum is 52.

The spelling of 1273283328265 in words is "one trillion, two hundred seventy-three billion, two hundred eighty-three million, three hundred twenty-eight thousand, two hundred sixty-five".