229666689961 has 2 divisors, whose sum is σ = 229666689962. Its totient is φ = 229666689960.

The previous prime is 229666689949. The next prime is 229666689997. The reversal of 229666689961 is 169986666922.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166346516736 + 63320173225 = 407856^2 + 251635^2 .

It is a cyclic number.

It is not a de Polignac number, because 229666689961 - 2⁵ = 229666689929 is a prime.

It is not a weakly prime, because it can be changed into another prime (229666686961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114833344980 + 114833344981.

It is an arithmetic number, because the mean of its divisors is an integer number (114833344981).

Almost surely, 2^229666689961 is an apocalyptic number.

It is an amenable number.

229666689961 is a deficient number, since it is larger than the sum of its proper divisors (1).

229666689961 is an equidigital number, since it uses as much as digits as its factorization.

229666689961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181398528, while the sum is 70.

The spelling of 229666689961 in words is "two hundred twenty-nine billion, six hundred sixty-six million, six hundred eighty-nine thousand, nine hundred sixty-one".