8550986578849 has 49 divisors (see below), whose sum is σ = 10189924987831. Its totient is φ = 7175653073160.

The previous prime is 8550986578831. The next prime is 8550986578877. The reversal of 8550986578849 is 9488756890558.

The square root of 8550986578849 is 2924207.

The cubic root of 8550986578849 is 20449.

It is a perfect power (a square, a cube, a 6-th power), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 7336432702225 + 1214553876624 = 2708585^2 + 1102068^2 .

It is not a de Polignac number, because 8550986578849 - 2¹³ = 8550986570657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8550986578829) by changing a digit.

It is a polite number, since it can be written in 48 ways as a sum of consecutive naturals, for example, 657768198367 + ... + 657768198379.

Almost surely, 2^{8550986578849} is an apocalyptic number.

8550986578849 is the 2924207-th square number.

8550986578849 is the 1462104-th centered octagonal number.

It is an amenable number.

8550986578849 is a deficient number, since it is larger than the sum of its proper divisors (1638938408982).

8550986578849 is an frugal number, since it uses more digits than its factorization.

8550986578849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 6967296000, while the sum is 82.

The spelling of 8550986578849 in words is "eight trillion, five hundred fifty billion, nine hundred eighty-six million, five hundred seventy-eight thousand, eight hundred forty-nine".