8881366081 has 9 divisors (see below), whose sum is σ = 10332152481. Its totient is φ = 7612034052.

The previous prime is 8881366037. The next prime is 8881366093. The reversal of 8881366081 is 1806631888.

The square root of 8881366081 is 94241.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 8881366081 - 2⁹ = 8881365569 is a prime.

It is a super-2 number, since 2×8881366081² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (8881366031) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 652956 + ... + 666418.

Almost surely, 2^8881366081 is an apocalyptic number.

8881366081 is the 94241-st square number.

8881366081 is the 47121-st centered octagonal number.

It is an amenable number.

8881366081 is a deficient number, since it is larger than the sum of its proper divisors (1450786400).

8881366081 is an frugal number, since it uses more digits than its factorization.

8881366081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26940 (or 13470 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The cubic root of 8881366081 is about 2070.9037945387.

Multiplying 8881366081 by its sum of digits (49), we get a square (435186937969 = 659687²).

8881366081 divided by its sum of digits (49) gives a square (181252369 = 13463²).

The spelling of 8881366081 in words is "eight billion, eight hundred eighty-one million, three hundred sixty-six thousand, eighty-one".