9661829899 has 2 divisors, whose sum is σ = 9661829900. Its totient is φ = 9661829898.

The previous prime is 9661829789. The next prime is 9661829941. The reversal of 9661829899 is 9989281669.

It is a strong prime.

It is an emirp because it is prime and its reverse (9989281669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9661829899 - 2¹³ = 9661821707 is a prime.

It is not a weakly prime, because it can be changed into another prime (9661829299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4830914949 + 4830914950.

It is an arithmetic number, because the mean of its divisors is an integer number (4830914950).

Almost surely, 2^9661829899 is an apocalyptic number.

9661829899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9661829899 is an equidigital number, since it uses as much as digits as its factorization.

9661829899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30233088, while the sum is 67.

The square root of 9661829899 is about 98294.6076801775. The cubic root of 9661829899 is about 2129.8701603354.

The spelling of 9661829899 in words is "nine billion, six hundred sixty-one million, eight hundred twenty-nine thousand, eight hundred ninety-nine".