8965559280 has 160 divisors (see below), whose sum is σ = 29538091584. Its totient is φ = 2241773568.

The previous prime is 8965559231. The next prime is 8965559299. The reversal of 8965559280 is 829555698.

It is a self number, because there is not a number n which added to its sum of digits gives 8965559280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1126194 + ... + 1134126.

Almost surely, 2^8965559280 is an apocalyptic number.

8965559280 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 8965559280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14769045792).

8965559280 is an abundant number, since it is smaller than the sum of its proper divisors (20572532304).

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

8965559280 is a wasteful number, since it uses less digits than its factorization.

8965559280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8243 (or 8237 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 57.

The square root of 8965559280 is about 94686.6372831985. The cubic root of 8965559280 is about 2077.4271133675.

The spelling of 8965559280 in words is "eight billion, nine hundred sixty-five million, five hundred fifty-nine thousand, two hundred eighty".