6909189969277 has 2 divisors, whose sum is σ = 6909189969278. Its totient is φ = 6909189969276.

The previous prime is 6909189969233. The next prime is 6909189969421. The reversal of 6909189969277 is 7729699819096.

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., 6906730900356 + 2459068921 = 2628066^2 + 49589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6909189969277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6909189969277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6909189769277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3454594984638 + 3454594984639.

It is an arithmetic number, because the mean of its divisors is an integer number (3454594984639).

Almost surely, 2^{6909189969277} is an apocalyptic number.

It is an amenable number.

6909189969277 is a deficient number, since it is larger than the sum of its proper divisors (1).

6909189969277 is an equidigital number, since it uses as much as digits as its factorization.

6909189969277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1666598976, while the sum is 82.

The spelling of 6909189969277 in words is "six trillion, nine hundred nine billion, one hundred eighty-nine million, nine hundred sixty-nine thousand, two hundred seventy-seven".