16945455004403 has 2 divisors, whose sum is σ = 16945455004404. Its totient is φ = 16945455004402.

The previous prime is 16945455004381. The next prime is 16945455004447. The reversal of 16945455004403 is 30440055454961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16945455004403 - 2³⁶ = 16876735527667 is a prime.

It is a super-3 number, since 3×16945455004403³ (a number of 41 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (16945455004483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8472727502201 + 8472727502202.

It is an arithmetic number, because the mean of its divisors is an integer number (8472727502202).

Almost surely, 2^{16945455004403} is an apocalyptic number.

16945455004403 is a deficient number, since it is larger than the sum of its proper divisors (1).

16945455004403 is an equidigital number, since it uses as much as digits as its factorization.

16945455004403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 16945455004403 in words is "sixteen trillion, nine hundred forty-five billion, four hundred fifty-five million, four thousand, four hundred three".