8638616947184 has 80 divisors (see below), whose sum is σ = 19327213145856. Its totient is φ = 3663784396800.

The previous prime is 8638616947183. The next prime is 8638616947189. The reversal of 8638616947184 is 4817496168368.

It is a super-2 number, since 2×8638616947184² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8638616947183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163922279 + ... + 163974969.

Almost surely, 2^{8638616947184} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8638616947184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9663606572928).

8638616947184 is an abundant number, since it is smaller than the sum of its proper divisors (10688596198672).

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

8638616947184 is a wasteful number, since it uses less digits than its factorization.

8638616947184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67894 (or 67888 counting only the distinct ones).

The product of its digits is 334430208, while the sum is 71.

The spelling of 8638616947184 in words is "eight trillion, six hundred thirty-eight billion, six hundred sixteen million, nine hundred forty-seven thousand, one hundred eighty-four".