28226879999 has 2 divisors, whose sum is σ = 28226880000. Its totient is φ = 28226879998.

The previous prime is 28226879983. The next prime is 28226880029. The reversal of 28226879999 is 99997862282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28226879999 - 2⁴ = 28226879983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28226879699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14113439999 + 14113440000.

It is an arithmetic number, because the mean of its divisors is an integer number (14113440000).

Almost surely, 2^28226879999 is an apocalyptic number.

28226879999 is a deficient number, since it is larger than the sum of its proper divisors (1).

28226879999 is an equidigital number, since it uses as much as digits as its factorization.

28226879999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141087744, while the sum is 71.

The spelling of 28226879999 in words is "twenty-eight billion, two hundred twenty-six million, eight hundred seventy-nine thousand, nine hundred ninety-nine".