8881601440 has 24 divisors (see below), whose sum is σ = 20982783780. Its totient is φ = 3552640512.

The previous prime is 8881601419. The next prime is 8881601441. The reversal of 8881601440 is 441061888.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8500102416 + 381499024 = 92196^2 + 19532^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 8881601393 and 8881601402.

It is not an unprimeable number, because it can be changed into a prime (8881601441) 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, 27754845 + ... + 27755164.

Almost surely, 2^8881601440 is an apocalyptic number.

8881601440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8881601440 is an abundant number, since it is smaller than the sum of its proper divisors (12101182340).

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

8881601440 is a wasteful number, since it uses less digits than its factorization.

8881601440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55510024 (or 55510016 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 8881601440 is about 94242.2486998268. The cubic root of 8881601440 is about 2070.9220875782.

The spelling of 8881601440 in words is "eight billion, eight hundred eighty-one million, six hundred one thousand, four hundred forty".