16516343533 has 2 divisors, whose sum is σ = 16516343534. Its totient is φ = 16516343532.

The previous prime is 16516343509. The next prime is 16516343537. The reversal of 16516343533 is 33534361561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14750831209 + 1765512324 = 121453^2 + 42018^2 .

It is an emirp because it is prime and its reverse (33534361561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16516343533 - 2⁹ = 16516343021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16516343537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8258171766 + 8258171767.

It is an arithmetic number, because the mean of its divisors is an integer number (8258171767).

Almost surely, 2^16516343533 is an apocalyptic number.

It is an amenable number.

16516343533 is a deficient number, since it is larger than the sum of its proper divisors (1).

16516343533 is an equidigital number, since it uses as much as digits as its factorization.

16516343533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 40.

The spelling of 16516343533 in words is "sixteen billion, five hundred sixteen million, three hundred forty-three thousand, five hundred thirty-three".