8581662223464 has 128 divisors (see below), whose sum is σ = 24215107593600. Its totient is φ = 2510465986560.

The previous prime is 8581662223457. The next prime is 8581662223469. The reversal of 8581662223464 is 4643222661858.

It is not an unprimeable number, because it can be changed into a prime (8581662223469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54991692 + ... + 55147524.

It is an arithmetic number, because the mean of its divisors is an integer number (189180528075).

Almost surely, 2^{8581662223464} 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 8581662223464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12107553796800).

8581662223464 is an abundant number, since it is smaller than the sum of its proper divisors (15633445370136).

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

8581662223464 is a wasteful number, since it uses less digits than its factorization.

8581662223464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163075 (or 163071 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 57.

The spelling of 8581662223464 in words is "eight trillion, five hundred eighty-one billion, six hundred sixty-two million, two hundred twenty-three thousand, four hundred sixty-four".