28226879773 has 2 divisors, whose sum is σ = 28226879774. Its totient is φ = 28226879772.

The previous prime is 28226879699. The next prime is 28226879809. The reversal of 28226879773 is 37797862282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27018483129 + 1208396644 = 164373^2 + 34762^2 .

It is a cyclic number.

It is not a de Polignac number, because 28226879773 - 2¹³ = 28226871581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28226879173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14113439886 + 14113439887.

It is an arithmetic number, because the mean of its divisors is an integer number (14113439887).

Almost surely, 2^28226879773 is an apocalyptic number.

It is an amenable number.

28226879773 is a deficient number, since it is larger than the sum of its proper divisors (1).

28226879773 is an equidigital number, since it uses as much as digits as its factorization.

28226879773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28449792, while the sum is 61.

The spelling of 28226879773 in words is "twenty-eight billion, two hundred twenty-six million, eight hundred seventy-nine thousand, seven hundred seventy-three".