11743780691 has 2 divisors, whose sum is σ = 11743780692. Its totient is φ = 11743780690.

The previous prime is 11743780669. The next prime is 11743780781. The reversal of 11743780691 is 19608734711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11743780691 - 2²² = 11739586387 is a prime.

It is not a weakly prime, because it can be changed into another prime (11743780891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5871890345 + 5871890346.

It is an arithmetic number, because the mean of its divisors is an integer number (5871890346).

Almost surely, 2^11743780691 is an apocalyptic number.

11743780691 is a deficient number, since it is larger than the sum of its proper divisors (1).

11743780691 is an equidigital number, since it uses as much as digits as its factorization.

11743780691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 11743780691 in words is "eleven billion, seven hundred forty-three million, seven hundred eighty thousand, six hundred ninety-one".