8821537536 has 144 divisors (see below), whose sum is σ = 27403858944. Its totient is φ = 2466742272.

The previous prime is 8821537481. The next prime is 8821537559. The reversal of 8821537536 is 6357351288.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 235216 + ... + 270128.

It is an arithmetic number, because the mean of its divisors is an integer number (190304576).

Almost surely, 2^8821537536 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 8821537536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13701929472).

8821537536 is an abundant number, since it is smaller than the sum of its proper divisors (18582321408).

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

8821537536 is a wasteful number, since it uses less digits than its factorization.

8821537536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34986 (or 34972 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 8821537536 is about 93923.0404959294. The cubic root of 8821537536 is about 2066.2431594678.

It can be divided in two parts, 88215 and 37536, that added together give a triangular number (125751 = T₅₀₁).

The spelling of 8821537536 in words is "eight billion, eight hundred twenty-one million, five hundred thirty-seven thousand, five hundred thirty-six".