28331247199 has 2 divisors, whose sum is σ = 28331247200. Its totient is φ = 28331247198.

The previous prime is 28331247181. The next prime is 28331247223. The reversal of 28331247199 is 99174213382.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28331247199 - 2¹⁷ = 28331116127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28331247179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14165623599 + 14165623600.

It is an arithmetic number, because the mean of its divisors is an integer number (14165623600).

Almost surely, 2^28331247199 is an apocalyptic number.

28331247199 is a deficient number, since it is larger than the sum of its proper divisors (1).

28331247199 is an equidigital number, since it uses as much as digits as its factorization.

28331247199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The spelling of 28331247199 in words is "twenty-eight billion, three hundred thirty-one million, two hundred forty-seven thousand, one hundred ninety-nine".