28328279999 has 2 divisors, whose sum is σ = 28328280000. Its totient is φ = 28328279998.

The previous prime is 28328279963. The next prime is 28328280007. The reversal of 28328279999 is 99997282382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28328279999 - 2²⁴ = 28311502783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28328279939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14164139999 + 14164140000.

It is an arithmetic number, because the mean of its divisors is an integer number (14164140000).

Almost surely, 2^28328279999 is an apocalyptic number.

28328279999 is a deficient number, since it is larger than the sum of its proper divisors (1).

28328279999 is an equidigital number, since it uses as much as digits as its factorization.

28328279999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70543872, while the sum is 68.

The spelling of 28328279999 in words is "twenty-eight billion, three hundred twenty-eight million, two hundred seventy-nine thousand, nine hundred ninety-nine".