8661217130 has 32 divisors (see below), whose sum is σ = 15842941200. Its totient is φ = 3408556032.

The previous prime is 8661217067. The next prime is 8661217151. The reversal of 8661217130 is 317121668.

It can be written as a sum of positive squares in 8 ways, for example, as 4274936689 + 4386280441 = 65383^2 + 66229^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284066 + ... + 313074.

Almost surely, 2^8661217130 is an apocalyptic number.

8661217130 is a deficient number, since it is larger than the sum of its proper divisors (7181724070).

8661217130 is a wasteful number, since it uses less digits than its factorization.

8661217130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29498.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 8661217130 is about 93065.6603157147. The cubic root of 8661217130 is about 2053.6494288053.

Adding to 8661217130 its reverse (317121668), we get a palindrome (8978338798).

The spelling of 8661217130 in words is "eight billion, six hundred sixty-one million, two hundred seventeen thousand, one hundred thirty".