8821977144 has 64 divisors (see below), whose sum is σ = 23404788000. Its totient is φ = 2761457664.

The previous prime is 8821977139. The next prime is 8821977173. The reversal of 8821977144 is 4417791288.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 159114 + ... + 207270.

Almost surely, 2^8821977144 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 8821977144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11702394000).

8821977144 is an abundant number, since it is smaller than the sum of its proper divisors (14582810856).

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

8821977144 is a wasteful number, since it uses less digits than its factorization.

8821977144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48632 (or 48628 counting only the distinct ones).

The product of its digits is 903168, while the sum is 51.

The square root of 8821977144 is about 93925.3807232103. The cubic root of 8821977144 is about 2066.2774816000.

The spelling of 8821977144 in words is "eight billion, eight hundred twenty-one million, nine hundred seventy-seven thousand, one hundred forty-four".