8421111488 has 56 divisors (see below), whose sum is σ = 17305477200. Its totient is φ = 4063288320.

The previous prime is 8421111487. The next prime is 8421111493. The reversal of 8421111488 is 8841111248.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (8421111487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186563 + ... + 227261.

Almost surely, 2^8421111488 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 8421111488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8652738600).

8421111488 is an abundant number, since it is smaller than the sum of its proper divisors (8884365712).

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

8421111488 is a wasteful number, since it uses less digits than its factorization.

8421111488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40825 (or 40815 counting only the distinct ones).

The product of its digits is 16384, while the sum is 38.

The square root of 8421111488 is about 91766.6142341538. The cubic root of 8421111488 is about 2034.4942761892.

The spelling of 8421111488 in words is "eight billion, four hundred twenty-one million, one hundred eleven thousand, four hundred eighty-eight".