16212516049 has 2 divisors, whose sum is σ = 16212516050. Its totient is φ = 16212516048.

The previous prime is 16212515983. The next prime is 16212516079. The reversal of 16212516049 is 94061521261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9306075024 + 6906441025 = 96468^2 + 83105^2 .

It is a cyclic number.

It is not a de Polignac number, because 16212516049 - 2⁹ = 16212515537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16212515999 and 16212516017.

It is not a weakly prime, because it can be changed into another prime (16212516079) 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, 8106258024 + 8106258025.

It is an arithmetic number, because the mean of its divisors is an integer number (8106258025).

Almost surely, 2^16212516049 is an apocalyptic number.

It is an amenable number.

16212516049 is a deficient number, since it is larger than the sum of its proper divisors (1).

16212516049 is an equidigital number, since it uses as much as digits as its factorization.

16212516049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 16212516049 in words is "sixteen billion, two hundred twelve million, five hundred sixteen thousand, forty-nine".