16036638433 has 2 divisors, whose sum is σ = 16036638434. Its totient is φ = 16036638432.

The previous prime is 16036638421. The next prime is 16036638439. The reversal of 16036638433 is 33483663061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13228910289 + 2807728144 = 115017^2 + 52988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16036638433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16036638433.

It is not a weakly prime, because it can be changed into another prime (16036638439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8018319216 + 8018319217.

It is an arithmetic number, because the mean of its divisors is an integer number (8018319217).

Almost surely, 2^16036638433 is an apocalyptic number.

It is an amenable number.

16036638433 is a deficient number, since it is larger than the sum of its proper divisors (1).

16036638433 is an equidigital number, since it uses as much as digits as its factorization.

16036638433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 16036638433 in words is "sixteen billion, thirty-six million, six hundred thirty-eight thousand, four hundred thirty-three".