8661081180 has 24 divisors (see below), whose sum is σ = 24251027472. Its totient is φ = 2309621632.

The previous prime is 8661081161. The next prime is 8661081197. The reversal of 8661081180 is 811801668.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72175617 + ... + 72175736.

It is an arithmetic number, because the mean of its divisors is an integer number (1010459478).

Almost surely, 2^8661081180 is an apocalyptic number.

It is an amenable number.

8661081180 is an abundant number, since it is smaller than the sum of its proper divisors (15589946292).

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

8661081180 is a wasteful number, since it uses less digits than its factorization.

8661081180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144351365 (or 144351363 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 8661081180 is about 93064.9299145494. The cubic root of 8661081180 is about 2053.6386837758.

The spelling of 8661081180 in words is "eight billion, six hundred sixty-one million, eighty-one thousand, one hundred eighty".