6777139189 has 2 divisors, whose sum is σ = 6777139190. Its totient is φ = 6777139188.

The previous prime is 6777139181. The next prime is 6777139211. The reversal of 6777139189 is 9819317776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6733023025 + 44116164 = 82055^2 + 6642^2 .

It is a cyclic number.

It is not a de Polignac number, because 6777139189 - 2³ = 6777139181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6777139181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3388569594 + 3388569595.

It is an arithmetic number, because the mean of its divisors is an integer number (3388569595).

Almost surely, 2^6777139189 is an apocalyptic number.

It is an amenable number.

6777139189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6777139189 is an equidigital number, since it uses as much as digits as its factorization.

6777139189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000752, while the sum is 58.

The square root of 6777139189 is about 82323.3817879222. The cubic root of 6777139189 is about 1892.4110201443.

The spelling of 6777139189 in words is "six billion, seven hundred seventy-seven million, one hundred thirty-nine thousand, one hundred eighty-nine".