16519983247 has 2 divisors, whose sum is σ = 16519983248. Its totient is φ = 16519983246.

The previous prime is 16519983191. The next prime is 16519983253. The reversal of 16519983247 is 74238991561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16519983247 - 2⁷ = 16519983119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16519983947) 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, 8259991623 + 8259991624.

It is an arithmetic number, because the mean of its divisors is an integer number (8259991624).

Almost surely, 2^16519983247 is an apocalyptic number.

16519983247 is a deficient number, since it is larger than the sum of its proper divisors (1).

16519983247 is an equidigital number, since it uses as much as digits as its factorization.

16519983247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 55.

The spelling of 16519983247 in words is "sixteen billion, five hundred nineteen million, nine hundred eighty-three thousand, two hundred forty-seven".