8578871118841 has 9 divisors (see below), whose sum is σ = 8884983029871. Its totient is φ = 8282965965624.

The previous prime is 8578871118823. The next prime is 8578871118859. The reversal of 8578871118841 is 1488111788758.

The square root of 8578871118841 is 2928971.

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

It is an interprime number because it is at equal distance from previous prime (8578871118823) and next prime (8578871118859).

It can be written as a sum of positive squares in only one way, i.e., 4498551918441 + 4080319200400 = 2120979^2 + 2019980^2 .

It is not a de Polignac number, because 8578871118841 - 2³⁹ = 8029115304953 is a prime.

It is a super-2 number, since 2×8578871118841² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8578871118821) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 84889660 + ... + 84990658.

Almost surely, 2^{8578871118841} is an apocalyptic number.

8578871118841 is the 2928971-st square number.

8578871118841 is the 1464486-th centered octagonal number.

It is an amenable number.

8578871118841 is a deficient number, since it is larger than the sum of its proper divisors (306111911030).

8578871118841 is an frugal number, since it uses more digits than its factorization.

8578871118841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202056 (or 101028 counting only the distinct ones).

The product of its digits is 32112640, while the sum is 67.

The spelling of 8578871118841 in words is "eight trillion, five hundred seventy-eight billion, eight hundred seventy-one million, one hundred eighteen thousand, eight hundred forty-one".