11731664773 has 2 divisors, whose sum is σ = 11731664774. Its totient is φ = 11731664772.

The previous prime is 11731664767. The next prime is 11731664803. The reversal of 11731664773 is 37746613711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7530421284 + 4201243489 = 86778^2 + 64817^2 .

It is an emirp because it is prime and its reverse (37746613711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11731664773 - 2²⁹ = 11194793861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11731664723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5865832386 + 5865832387.

It is an arithmetic number, because the mean of its divisors is an integer number (5865832387).

Almost surely, 2^11731664773 is an apocalyptic number.

It is an amenable number.

11731664773 is a deficient number, since it is larger than the sum of its proper divisors (1).

11731664773 is an equidigital number, since it uses as much as digits as its factorization.

11731664773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 46.

The spelling of 11731664773 in words is "eleven billion, seven hundred thirty-one million, six hundred sixty-four thousand, seven hundred seventy-three".