8644417340540 has 24 divisors (see below), whose sum is σ = 18158276092992. Its totient is φ = 3456814616640.

The previous prime is 8644417340459. The next prime is 8644417340567. The reversal of 8644417340540 is 450437144468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59445539 + ... + 59590778.

It is an arithmetic number, because the mean of its divisors is an integer number (756594837208).

Almost surely, 2^{8644417340540} is an apocalyptic number.

It is an amenable number.

8644417340540 is an abundant number, since it is smaller than the sum of its proper divisors (9513858752452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8644417340540 is a wasteful number, since it uses less digits than its factorization.

8644417340540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119039957 (or 119039955 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 50.

The spelling of 8644417340540 in words is "eight trillion, six hundred forty-four billion, four hundred seventeen million, three hundred forty thousand, five hundred forty".