28336668219 has 12 divisors (see below), whose sum is σ = 42710340816. Its totient is φ = 18069759312.

The previous prime is 28336668193. The next prime is 28336668221. The reversal of 28336668219 is 91286663382.

It is not a de Polignac number, because 28336668219 - 2⁷ = 28336668091 is a prime.

It is a super-2 number, since 2×28336668219² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28336668289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68445852 + ... + 68446265.

It is an arithmetic number, because the mean of its divisors is an integer number (3559195068).

Almost surely, 2^28336668219 is an apocalyptic number.

28336668219 is a deficient number, since it is larger than the sum of its proper divisors (14373672597).

28336668219 is a wasteful number, since it uses less digits than its factorization.

28336668219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136892146 (or 136892143 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 28336668219 in words is "twenty-eight billion, three hundred thirty-six million, six hundred sixty-eight thousand, two hundred nineteen".