8553968609 has 2 divisors, whose sum is σ = 8553968610. Its totient is φ = 8553968608.

The previous prime is 8553968603. The next prime is 8553968639. The reversal of 8553968609 is 9068693558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5925150625 + 2628817984 = 76975^2 + 51272^2 .

It is a cyclic number.

It is not a de Polignac number, because 8553968609 - 2⁴ = 8553968593 is a prime.

It is not a weakly prime, because it can be changed into another prime (8553968603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4276984304 + 4276984305.

It is an arithmetic number, because the mean of its divisors is an integer number (4276984305).

Almost surely, 2^8553968609 is an apocalyptic number.

It is an amenable number.

8553968609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8553968609 is an equidigital number, since it uses as much as digits as its factorization.

8553968609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13996800, while the sum is 59.

The square root of 8553968609 is about 92487.6673346236. The cubic root of 8553968609 is about 2045.1376819205.

The spelling of 8553968609 in words is "eight billion, five hundred fifty-three million, nine hundred sixty-eight thousand, six hundred nine".