226404644987 has 2 divisors, whose sum is σ = 226404644988. Its totient is φ = 226404644986.

The previous prime is 226404644971. The next prime is 226404645017. The reversal of 226404644987 is 789446404622.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 226404644987 - 2⁴ = 226404644971 is a prime.

It is not a weakly prime, because it can be changed into another prime (226404644887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113202322493 + 113202322494.

It is an arithmetic number, because the mean of its divisors is an integer number (113202322494).

Almost surely, 2^226404644987 is an apocalyptic number.

226404644987 is a deficient number, since it is larger than the sum of its proper divisors (1).

226404644987 is an equidigital number, since it uses as much as digits as its factorization.

226404644987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18579456, while the sum is 56.

The spelling of 226404644987 in words is "two hundred twenty-six billion, four hundred four million, six hundred forty-four thousand, nine hundred eighty-seven".