2077667721169 has 2 divisors, whose sum is σ = 2077667721170. Its totient is φ = 2077667721168.

The previous prime is 2077667721149. The next prime is 2077667721223. The reversal of 2077667721169 is 9611277667702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2052735311169 + 24932410000 = 1432737^2 + 157900^2 .

It is a cyclic number.

It is not a de Polignac number, because 2077667721169 - 2¹³ = 2077667712977 is a prime.

It is a super-2 number, since 2×2077667721169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2077667721149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038833860584 + 1038833860585.

It is an arithmetic number, because the mean of its divisors is an integer number (1038833860585).

Almost surely, 2^{2077667721169} is an apocalyptic number.

It is an amenable number.

2077667721169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2077667721169 is an equidigital number, since it uses as much as digits as its factorization.

2077667721169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18670176, while the sum is 61.

The spelling of 2077667721169 in words is "two trillion, seventy-seven billion, six hundred sixty-seven million, seven hundred twenty-one thousand, one hundred sixty-nine".