16045450201993 has 2 divisors, whose sum is σ = 16045450201994. Its totient is φ = 16045450201992.

The previous prime is 16045450201967. The next prime is 16045450202051. The reversal of 16045450201993 is 39910205454061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11211595050384 + 4833855151609 = 3348372^2 + 2198603^2 .

It is a cyclic number.

It is not a de Polignac number, because 16045450201993 - 2³³ = 16036860267401 is a prime.

It is not a weakly prime, because it can be changed into another prime (16045450201933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8022725100996 + 8022725100997.

It is an arithmetic number, because the mean of its divisors is an integer number (8022725100997).

Almost surely, 2^{16045450201993} is an apocalyptic number.

It is an amenable number.

16045450201993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16045450201993 is an equidigital number, since it uses as much as digits as its factorization.

16045450201993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 16045450201993 in words is "sixteen trillion, forty-five billion, four hundred fifty million, two hundred one thousand, nine hundred ninety-three".