16545126455573 has 2 divisors, whose sum is σ = 16545126455574. Its totient is φ = 16545126455572.

The previous prime is 16545126455563. The next prime is 16545126455639. The reversal of 16545126455573 is 37555462154561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13340661285169 + 3204465170404 = 3652487^2 + 1790102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16545126455573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16545126455563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272563227786 + 8272563227787.

It is an arithmetic number, because the mean of its divisors is an integer number (8272563227787).

Almost surely, 2^{16545126455573} is an apocalyptic number.

It is an amenable number.

16545126455573 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545126455573 is an equidigital number, since it uses as much as digits as its factorization.

16545126455573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600000, while the sum is 59.

The spelling of 16545126455573 in words is "sixteen trillion, five hundred forty-five billion, one hundred twenty-six million, four hundred fifty-five thousand, five hundred seventy-three".