211453360777 has 2 divisors, whose sum is σ = 211453360778. Its totient is φ = 211453360776.

The previous prime is 211453360759. The next prime is 211453360787. The reversal of 211453360777 is 777063354112.

211453360777 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 can be written as a sum of positive squares in only one way, i.e., 209273311296 + 2180049481 = 457464^2 + 46691^2 .

It is a cyclic number.

It is not a de Polignac number, because 211453360777 - 2¹¹ = 211453358729 is a prime.

It is not a weakly prime, because it can be changed into another prime (211453360747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105726680388 + 105726680389.

It is an arithmetic number, because the mean of its divisors is an integer number (105726680389).

Almost surely, 2^211453360777 is an apocalyptic number.

It is an amenable number.

211453360777 is a deficient number, since it is larger than the sum of its proper divisors (1).

211453360777 is an equidigital number, since it uses as much as digits as its factorization.

211453360777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 46.

The spelling of 211453360777 in words is "two hundred eleven billion, four hundred fifty-three million, three hundred sixty thousand, seven hundred seventy-seven".