16545720173033 has 2 divisors, whose sum is σ = 16545720173034. Its totient is φ = 16545720173032.

The previous prime is 16545720173009. The next prime is 16545720173077. The reversal of 16545720173033 is 33037102754561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15697420228009 + 848299945024 = 3961997^2 + 921032^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16545720173033 is a prime.

It is a super-2 number, since 2×16545720173033² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16545720173833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272860086516 + 8272860086517.

It is an arithmetic number, because the mean of its divisors is an integer number (8272860086517).

Almost surely, 2^{16545720173033} is an apocalyptic number.

It is an amenable number.

16545720173033 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545720173033 is an equidigital number, since it uses as much as digits as its factorization.

16545720173033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1587600, while the sum is 47.

The spelling of 16545720173033 in words is "sixteen trillion, five hundred forty-five billion, seven hundred twenty million, one hundred seventy-three thousand, thirty-three".