8644564654468 has 12 divisors (see below), whose sum is σ = 16017869801052. Its totient is φ = 4068030425600.

The previous prime is 8644564654423. The next prime is 8644564654471.

8644564654468 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 4198573117764 + 4445991536704 = 2049042^2 + 2108552^2 .

It is a super-3 number, since 3×8644564654468³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8644564654397 and 8644564654406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63562975333 + ... + 63562975468.

It is an arithmetic number, because the mean of its divisors is an integer number (1334822483421).

Almost surely, 2^{8644564654468} is an apocalyptic number.

It is an amenable number.

8644564654468 is a deficient number, since it is larger than the sum of its proper divisors (7373305146584).

8644564654468 is a wasteful number, since it uses less digits than its factorization.

8644564654468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127125950822 (or 127125950820 counting only the distinct ones).

The product of its digits is 2123366400, while the sum is 70.

The spelling of 8644564654468 in words is "eight trillion, six hundred forty-four billion, five hundred sixty-four million, six hundred fifty-four thousand, four hundred sixty-eight".