11720780765219 has 2 divisors, whose sum is σ = 11720780765220. Its totient is φ = 11720780765218.

The previous prime is 11720780765171. The next prime is 11720780765227. The reversal of 11720780765219 is 91256708702711.

11720780765219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (91256708702711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11720780765219 - 2²⁰ = 11720779716643 is a prime.

It is a super-2 number, since 2×11720780765219² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11720780765119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5860390382609 + 5860390382610.

It is an arithmetic number, because the mean of its divisors is an integer number (5860390382610).

Almost surely, 2^{11720780765219} is an apocalyptic number.

11720780765219 is a deficient number, since it is larger than the sum of its proper divisors (1).

11720780765219 is an equidigital number, since it uses as much as digits as its factorization.

11720780765219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2963520, while the sum is 56.

The spelling of 11720780765219 in words is "eleven trillion, seven hundred twenty billion, seven hundred eighty million, seven hundred sixty-five thousand, two hundred nineteen".