9885288643 has 2 divisors, whose sum is σ = 9885288644. Its totient is φ = 9885288642.

The previous prime is 9885288613. The next prime is 9885288653. The reversal of 9885288643 is 3468825889.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9885288643 is a prime.

It is not a weakly prime, because it can be changed into another prime (9885288613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4942644321 + 4942644322.

It is an arithmetic number, because the mean of its divisors is an integer number (4942644322).

Almost surely, 2^9885288643 is an apocalyptic number.

9885288643 is a deficient number, since it is larger than the sum of its proper divisors (1).

9885288643 is an equidigital number, since it uses as much as digits as its factorization.

9885288643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26542080, while the sum is 61.

The square root of 9885288643 is about 99424.7888758131. The cubic root of 9885288643 is about 2146.1650506801.

The spelling of 9885288643 in words is "nine billion, eight hundred eighty-five million, two hundred eighty-eight thousand, six hundred forty-three".