8545594544489 has 4 divisors (see below), whose sum is σ = 8545943753556. Its totient is φ = 8545245335424.

The previous prime is 8545594544479. The next prime is 8545594544491. The reversal of 8545594544489 is 9844454955458.

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 2826164454400 + 5719430090089 = 1681120^2 + 2391533^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8545594544489 is a prime.

It is a super-2 number, since 2×8545594544489² (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 (8545594544419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174567824 + ... + 174616769.

It is an arithmetic number, because the mean of its divisors is an integer number (2136485938389).

Almost surely, 2^{8545594544489} is an apocalyptic number.

It is an amenable number.

8545594544489 is a deficient number, since it is larger than the sum of its proper divisors (349209067).

8545594544489 is a wasteful number, since it uses less digits than its factorization.

8545594544489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349209066.

The product of its digits is 3317760000, while the sum is 74.

The spelling of 8545594544489 in words is "eight trillion, five hundred forty-five billion, five hundred ninety-four million, five hundred forty-four thousand, four hundred eighty-nine".