11773747813 has 2 divisors, whose sum is σ = 11773747814. Its totient is φ = 11773747812.

The previous prime is 11773747807. The next prime is 11773747847. The reversal of 11773747813 is 31874737711.

11773747813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5927922049 + 5845825764 = 76993^2 + 76458^2 .

It is a cyclic number.

It is not a de Polignac number, because 11773747813 - 2²⁹ = 11236876901 is a prime.

It is a super-2 number, since 2×11773747813² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11773747873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5886873906 + 5886873907.

It is an arithmetic number, because the mean of its divisors is an integer number (5886873907).

Almost surely, 2^11773747813 is an apocalyptic number.

It is an amenable number.

11773747813 is a deficient number, since it is larger than the sum of its proper divisors (1).

11773747813 is an equidigital number, since it uses as much as digits as its factorization.

11773747813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691488, while the sum is 49.

The spelling of 11773747813 in words is "eleven billion, seven hundred seventy-three million, seven hundred forty-seven thousand, eight hundred thirteen".