16508497097899 has 2 divisors, whose sum is σ = 16508497097900. Its totient is φ = 16508497097898.

The previous prime is 16508497097881. The next prime is 16508497097941. The reversal of 16508497097899 is 99879079480561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16508497097899 - 2²¹ = 16508495000747 is a prime.

It is not a weakly prime, because it can be changed into another prime (16508497097879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8254248548949 + 8254248548950.

It is an arithmetic number, because the mean of its divisors is an integer number (8254248548950).

Almost surely, 2^{16508497097899} is an apocalyptic number.

16508497097899 is a deficient number, since it is larger than the sum of its proper divisors (1).

16508497097899 is an equidigital number, since it uses as much as digits as its factorization.

16508497097899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2469035520, while the sum is 82.

The spelling of 16508497097899 in words is "sixteen trillion, five hundred eight billion, four hundred ninety-seven million, ninety-seven thousand, eight hundred ninety-nine".