16545198239 has 2 divisors, whose sum is σ = 16545198240. Its totient is φ = 16545198238.

The previous prime is 16545198227. The next prime is 16545198253. The reversal of 16545198239 is 93289154561.

It is a weak prime.

It is an emirp because it is prime and its reverse (93289154561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16545198239 is a prime.

It is a super-2 number, since 2×16545198239² (a number of 21 digits) contains 22 as substring.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 8272599119 + 8272599120.

It is an arithmetic number, because the mean of its divisors is an integer number (8272599120).

Almost surely, 2^16545198239 is an apocalyptic number.

16545198239 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545198239 is an equidigital number, since it uses as much as digits as its factorization.

16545198239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 53.

The spelling of 16545198239 in words is "sixteen billion, five hundred forty-five million, one hundred ninety-eight thousand, two hundred thirty-nine".