28626227213 has 2 divisors, whose sum is σ = 28626227214. Its totient is φ = 28626227212.

The previous prime is 28626227209. The next prime is 28626227219. The reversal of 28626227213 is 31272262682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25984472809 + 2641754404 = 161197^2 + 51398^2 .

It is a cyclic number.

It is not a de Polignac number, because 28626227213 - 2² = 28626227209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28626227219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14313113606 + 14313113607.

It is an arithmetic number, because the mean of its divisors is an integer number (14313113607).

Almost surely, 2^28626227213 is an apocalyptic number.

It is an amenable number.

28626227213 is a deficient number, since it is larger than the sum of its proper divisors (1).

28626227213 is an equidigital number, since it uses as much as digits as its factorization.

28626227213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 41.

Adding to 28626227213 its reverse (31272262682), we get a palindrome (59898489895).

The spelling of 28626227213 in words is "twenty-eight billion, six hundred twenty-six million, two hundred twenty-seven thousand, two hundred thirteen".