8881268161 has 4 divisors (see below), whose sum is σ = 8881491924. Its totient is φ = 8881044400.

The previous prime is 8881268113. The next prime is 8881268261. The reversal of 8881268161 is 1618621888.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3254017936 + 5627250225 = 57044^2 + 75015^2 .

It is a cyclic number.

It is not a de Polignac number, because 8881268161 - 2¹⁹ = 8880743873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8881268261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34510 + ... + 137671.

It is an arithmetic number, because the mean of its divisors is an integer number (2220372981).

Almost surely, 2^8881268161 is an apocalyptic number.

It is an amenable number.

8881268161 is a deficient number, since it is larger than the sum of its proper divisors (223763).

8881268161 is a wasteful number, since it uses less digits than its factorization.

8881268161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223762.

The product of its digits is 294912, while the sum is 49.

The square root of 8881268161 is about 94240.4804794628. The cubic root of 8881268161 is about 2070.8961837109.

The spelling of 8881268161 in words is "eight billion, eight hundred eighty-one million, two hundred sixty-eight thousand, one hundred sixty-one".