226521303709 has 2 divisors, whose sum is σ = 226521303710. Its totient is φ = 226521303708.

The previous prime is 226521303703. The next prime is 226521303721. The reversal of 226521303709 is 907303125622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158909863225 + 67611440484 = 398635^2 + 260022^2 .

It is a cyclic number.

It is not a de Polignac number, because 226521303709 - 2⁵ = 226521303677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226521303703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113260651854 + 113260651855.

It is an arithmetic number, because the mean of its divisors is an integer number (113260651855).

Almost surely, 2^226521303709 is an apocalyptic number.

It is an amenable number.

226521303709 is a deficient number, since it is larger than the sum of its proper divisors (1).

226521303709 is an equidigital number, since it uses as much as digits as its factorization.

226521303709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 226521303709 in words is "two hundred twenty-six billion, five hundred twenty-one million, three hundred three thousand, seven hundred nine".