9720199455899 has 2 divisors, whose sum is σ = 9720199455900. Its totient is φ = 9720199455898.

The previous prime is 9720199455829. The next prime is 9720199455917. The reversal of 9720199455899 is 9985549910279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9720199455899 - 2⁸ = 9720199455643 is a prime.

It is not a weakly prime, because it can be changed into another prime (9720199455829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4860099727949 + 4860099727950.

It is an arithmetic number, because the mean of its divisors is an integer number (4860099727950).

Almost surely, 2^{9720199455899} is an apocalyptic number.

9720199455899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9720199455899 is an equidigital number, since it uses as much as digits as its factorization.

9720199455899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 661348800, while the sum is 77.

The spelling of 9720199455899 in words is "nine trillion, seven hundred twenty billion, one hundred ninety-nine million, four hundred fifty-five thousand, eight hundred ninety-nine".