1677388869161 has 2 divisors, whose sum is σ = 1677388869162. Its totient is φ = 1677388869160.

The previous prime is 1677388869157. The next prime is 1677388869187. The reversal of 1677388869161 is 1619688837761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1370201349136 + 307187520025 = 1170556^2 + 554245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1677388869161 - 2² = 1677388869157 is a prime.

It is not a weakly prime, because it can be changed into another prime (1677388869151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838694434580 + 838694434581.

It is an arithmetic number, because the mean of its divisors is an integer number (838694434581).

Almost surely, 2^{1677388869161} is an apocalyptic number.

It is an amenable number.

1677388869161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1677388869161 is an equidigital number, since it uses as much as digits as its factorization.

1677388869161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146313216, while the sum is 71.

The spelling of 1677388869161 in words is "one trillion, six hundred seventy-seven billion, three hundred eighty-eight million, eight hundred sixty-nine thousand, one hundred sixty-one".