8781433243 has 16 divisors (see below), whose sum is σ = 10094083200. Its totient is φ = 7555351680.

The previous prime is 8781433217. The next prime is 8781433267. The reversal of 8781433243 is 3423341878.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8781433243 is a prime.

It is a super-2 number, since 2×8781433243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8781433243.

It is not an unprimeable number, because it can be changed into a prime (8781433543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192355 + ... + 233587.

It is an arithmetic number, because the mean of its divisors is an integer number (630880200).

Almost surely, 2^8781433243 is an apocalyptic number.

8781433243 is a deficient number, since it is larger than the sum of its proper divisors (1312649957).

8781433243 is a wasteful number, since it uses less digits than its factorization.

8781433243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42282.

The product of its digits is 387072, while the sum is 43.

The square root of 8781433243 is about 93709.3017954995. The cubic root of 8781433243 is about 2063.1072317361.

The spelling of 8781433243 in words is "eight billion, seven hundred eighty-one million, four hundred thirty-three thousand, two hundred forty-three".