220667478669329 has 2 divisors, whose sum is σ = 220667478669330. Its totient is φ = 220667478669328.

The previous prime is 220667478669269. The next prime is 220667478669331. The reversal of 220667478669329 is 923966874766022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180485064787729 + 40182413881600 = 13434473^2 + 6338960^2 .

It is a cyclic number.

It is not a de Polignac number, because 220667478669329 - 2³² = 220663183702033 is a prime.

It is a super-2 number, since 2×220667478669329² (a number of 29 digits) contains 22 as substring.

Together with 220667478669331, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220667478669329.

It is not a weakly prime, because it can be changed into another prime (220667478669929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110333739334664 + 110333739334665.

It is an arithmetic number, because the mean of its divisors is an integer number (110333739334665).

Almost surely, 2^{220667478669329} is an apocalyptic number.

It is an amenable number.

220667478669329 is a deficient number, since it is larger than the sum of its proper divisors (1).

220667478669329 is an equidigital number, since it uses as much as digits as its factorization.

220667478669329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3950456832, while the sum is 77.

The spelling of 220667478669329 in words is "two hundred twenty trillion, six hundred sixty-seven billion, four hundred seventy-eight million, six hundred sixty-nine thousand, three hundred twenty-nine".