11771765947723 has 2 divisors, whose sum is σ = 11771765947724. Its totient is φ = 11771765947722.

The previous prime is 11771765947717. The next prime is 11771765947811. The reversal of 11771765947723 is 32774956717711.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11771765947723 is a prime.

It is not a weakly prime, because it can be changed into another prime (11771765942723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5885882973861 + 5885882973862.

It is an arithmetic number, because the mean of its divisors is an integer number (5885882973862).

Almost surely, 2^{11771765947723} is an apocalyptic number.

11771765947723 is a deficient number, since it is larger than the sum of its proper divisors (1).

11771765947723 is an equidigital number, since it uses as much as digits as its factorization.

11771765947723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108909360, while the sum is 67.

The spelling of 11771765947723 in words is "eleven trillion, seven hundred seventy-one billion, seven hundred sixty-five million, nine hundred forty-seven thousand, seven hundred twenty-three".