875659878289 has 27 divisors (see below), whose sum is σ = 1047189059217. Its totient is φ = 730077927264.

The previous prime is 875659878281. The next prime is 875659878299. The reversal of 875659878289 is 982878956578.

The square root of 875659878289 is 935767.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 79853151889 + 795806726400 = 282583^2 + 892080^2 .

It is not a de Polignac number, because 875659878289 - 2³ = 875659878281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (875659878281) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 242361847 + ... + 242365459.

It is an arithmetic number, because the mean of its divisors is an integer number (38784779971).

Almost surely, 2^875659878289 is an apocalyptic number.

875659878289 is the 935767-th square number.

875659878289 is the 467884-th centered octagonal number.

It is an amenable number.

875659878289 is a deficient number, since it is larger than the sum of its proper divisors (171529180928).

875659878289 is an frugal number, since it uses more digits than its factorization.

875659878289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7314 (or 3657 counting only the distinct ones).

The product of its digits is 4877107200, while the sum is 82.

The spelling of 875659878289 in words is "eight hundred seventy-five billion, six hundred fifty-nine million, eight hundred seventy-eight thousand, two hundred eighty-nine".