226502189561 has 2 divisors, whose sum is σ = 226502189562. Its totient is φ = 226502189560.

The previous prime is 226502189513. The next prime is 226502189591. The reversal of 226502189561 is 165981205622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180173931961 + 46328257600 = 424469^2 + 215240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226502189561 is a prime.

It is not a weakly prime, because it can be changed into another prime (226502189591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113251094780 + 113251094781.

It is an arithmetic number, because the mean of its divisors is an integer number (113251094781).

Almost surely, 2^226502189561 is an apocalyptic number.

It is an amenable number.

226502189561 is a deficient number, since it is larger than the sum of its proper divisors (1).

226502189561 is an equidigital number, since it uses as much as digits as its factorization.

226502189561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 226502189561 in words is "two hundred twenty-six billion, five hundred two million, one hundred eighty-nine thousand, five hundred sixty-one".