226263325052981 has 2 divisors, whose sum is σ = 226263325052982. Its totient is φ = 226263325052980.

The previous prime is 226263325052977. The next prime is 226263325053013. The reversal of 226263325052981 is 189250523362622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225082777612081 + 1180547440900 = 15002759^2 + 1086530^2 .

It is a cyclic number.

It is not a de Polignac number, because 226263325052981 - 2² = 226263325052977 is a prime.

It is a super-2 number, since 2×226263325052981² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226263325052381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113131662526490 + 113131662526491.

It is an arithmetic number, because the mean of its divisors is an integer number (113131662526491).

Almost surely, 2^{226263325052981} is an apocalyptic number.

It is an amenable number.

226263325052981 is a deficient number, since it is larger than the sum of its proper divisors (1).

226263325052981 is an equidigital number, since it uses as much as digits as its factorization.

226263325052981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18662400, while the sum is 56.

The spelling of 226263325052981 in words is "two hundred twenty-six trillion, two hundred sixty-three billion, three hundred twenty-five million, fifty-two thousand, nine hundred eighty-one".