870617728743313 has 4 divisors (see below), whose sum is σ = 870783972347700. Its totient is φ = 870451485138928.

The previous prime is 870617728743307. The next prime is 870617728743337. The reversal of 870617728743313 is 313347827716078.

It is a happy number.

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 381306384676624 + 489311344066689 = 19527068^2 + 22120383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870617728743313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870617728743013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83121794338 + ... + 83121804811.

It is an arithmetic number, because the mean of its divisors is an integer number (217695993086925).

Almost surely, 2^{870617728743313} is an apocalyptic number.

It is an amenable number.

870617728743313 is a deficient number, since it is larger than the sum of its proper divisors (166243604387).

870617728743313 is a wasteful number, since it uses less digits than its factorization.

870617728743313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166243604386.

The product of its (nonzero) digits is 199148544, while the sum is 67.

The spelling of 870617728743313 in words is "eight hundred seventy trillion, six hundred seventeen billion, seven hundred twenty-eight million, seven hundred forty-three thousand, three hundred thirteen".