16545230197 has 8 divisors (see below), whose sum is σ = 16781909144. Its totient is φ = 16308822528.

The previous prime is 16545230173. The next prime is 16545230201. The reversal of 16545230197 is 79103254561.

It can be written as a sum of positive squares in 4 ways, for example, as 3069270801 + 13475959396 = 55401^2 + 116086^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16545230197 - 2³¹ = 14397746549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545270197) 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 in 7 ways as a sum of consecutive naturals, for example, 56653 + ... + 190525.

It is an arithmetic number, because the mean of its divisors is an integer number (2097738643).

Almost surely, 2^16545230197 is an apocalyptic number.

It is an amenable number.

16545230197 is a deficient number, since it is larger than the sum of its proper divisors (236678947).

16545230197 is a wasteful number, since it uses less digits than its factorization.

16545230197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135639.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 16545230197 in words is "sixteen billion, five hundred forty-five million, two hundred thirty thousand, one hundred ninety-seven".