228087426509 has 2 divisors, whose sum is σ = 228087426510. Its totient is φ = 228087426508.

The previous prime is 228087426433. The next prime is 228087426529. The reversal of 228087426509 is 905624780822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154834380100 + 73253046409 = 393490^2 + 270653^2 .

It is a cyclic number.

It is not a de Polignac number, because 228087426509 - 2¹² = 228087422413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228087426529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114043713254 + 114043713255.

It is an arithmetic number, because the mean of its divisors is an integer number (114043713255).

Almost surely, 2^228087426509 is an apocalyptic number.

It is an amenable number.

228087426509 is a deficient number, since it is larger than the sum of its proper divisors (1).

228087426509 is an equidigital number, since it uses as much as digits as its factorization.

228087426509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 228087426509 in words is "two hundred twenty-eight billion, eighty-seven million, four hundred twenty-six thousand, five hundred nine".