9973545899 has 2 divisors, whose sum is σ = 9973545900. Its totient is φ = 9973545898.

The previous prime is 9973545851. The next prime is 9973545919. The reversal of 9973545899 is 9985453799.

It is a strong prime.

It is an emirp because it is prime and its reverse (9985453799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9973545899 - 2²⁰ = 9972497323 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9973545809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986772949 + 4986772950.

It is an arithmetic number, because the mean of its divisors is an integer number (4986772950).

Almost surely, 2^9973545899 is an apocalyptic number.

9973545899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9973545899 is an equidigital number, since it uses as much as digits as its factorization.

9973545899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110224800, while the sum is 68.

The square root of 9973545899 is about 99867.6419016690. The cubic root of 9973545899 is about 2152.5332245633.

The spelling of 9973545899 in words is "nine billion, nine hundred seventy-three million, five hundred forty-five thousand, eight hundred ninety-nine".