16500281099 has 2 divisors, whose sum is σ = 16500281100. Its totient is φ = 16500281098.

The previous prime is 16500281059. The next prime is 16500281111. The reversal of 16500281099 is 99018200561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16500281099 is a prime.

It is not a weakly prime, because it can be changed into another prime (16500281059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250140549 + 8250140550.

It is an arithmetic number, because the mean of its divisors is an integer number (8250140550).

Almost surely, 2^16500281099 is an apocalyptic number.

16500281099 is a deficient number, since it is larger than the sum of its proper divisors (1).

16500281099 is an equidigital number, since it uses as much as digits as its factorization.

16500281099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 16500281099 in words is "sixteen billion, five hundred million, two hundred eighty-one thousand, ninety-nine".