8781161488 has 80 divisors (see below), whose sum is σ = 19272605760. Its totient is φ = 3839270400.

The previous prime is 8781161461. The next prime is 8781161503. The reversal of 8781161488 is 8841611878.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1410703 + ... + 1416913.

It is an arithmetic number, because the mean of its divisors is an integer number (240907572).

Almost surely, 2^8781161488 is an apocalyptic number.

8781161488 is a gapful number since it is divisible by the number (88) 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 8781161488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9636302880).

8781161488 is an abundant number, since it is smaller than the sum of its proper divisors (10491444272).

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

8781161488 is a wasteful number, since it uses less digits than its factorization.

8781161488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6536 (or 6530 counting only the distinct ones).

The product of its digits is 688128, while the sum is 52.

The square root of 8781161488 is about 93707.8517948203. The cubic root of 8781161488 is about 2063.0859495044.

The spelling of 8781161488 in words is "eight billion, seven hundred eighty-one million, one hundred sixty-one thousand, four hundred eighty-eight".