16545198253 has 2 divisors, whose sum is σ = 16545198254. Its totient is φ = 16545198252.

The previous prime is 16545198239. The next prime is 16545198259. The reversal of 16545198253 is 35289154561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8971499524 + 7573698729 = 94718^2 + 87027^2 .

It is a cyclic number.

It is not a de Polignac number, because 16545198253 - 2⁵ = 16545198221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16545198197 and 16545198206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16545198259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272599126 + 8272599127.

It is an arithmetic number, because the mean of its divisors is an integer number (8272599127).

Almost surely, 2^16545198253 is an apocalyptic number.

It is an amenable number.

16545198253 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545198253 is an equidigital number, since it uses as much as digits as its factorization.

16545198253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296000, while the sum is 49.

The spelling of 16545198253 in words is "sixteen billion, five hundred forty-five million, one hundred ninety-eight thousand, two hundred fifty-three".