8421554000 has 80 divisors (see below), whose sum is σ = 20796811776. Its totient is φ = 3296912000.

The previous prime is 8421553981. The next prime is 8421554017. The reversal of 8421554000 is 4551248.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49205 + ... + 138795.

Almost surely, 2^8421554000 is an apocalyptic number.

8421554000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8421554000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10398405888).

8421554000 is an abundant number, since it is smaller than the sum of its proper divisors (12375257776).

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

8421554000 is a wasteful number, since it uses less digits than its factorization.

8421554000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89661 (or 89645 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 8421554000 is about 91769.0252754163. The cubic root of 8421554000 is about 2034.5299117212.

The spelling of 8421554000 in words is "eight billion, four hundred twenty-one million, five hundred fifty-four thousand".