2776656566773 has 2 divisors, whose sum is σ = 2776656566774. Its totient is φ = 2776656566772.

The previous prime is 2776656566759. The next prime is 2776656566809. The reversal of 2776656566773 is 3776656566772.

2776656566773 is digitally balanced in base 3, 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., 1588855208004 + 1187801358769 = 1260498^2 + 1089863^2 .

It is a cyclic number.

It is not a de Polignac number, because 2776656566773 - 2¹³ = 2776656558581 is a prime.

It is a super-5 number, since 5×2776656566773⁵ (a number of 63 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2776656566696 and 2776656566705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2776656566273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388328283386 + 1388328283387.

It is an arithmetic number, because the mean of its divisors is an integer number (1388328283387).

Almost surely, 2^{2776656566773} is an apocalyptic number.

It is an amenable number.

2776656566773 is a deficient number, since it is larger than the sum of its proper divisors (1).

2776656566773 is an equidigital number, since it uses as much as digits as its factorization.

2776656566773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2800526400, while the sum is 73.

Subtracting 2776656566773 from its reverse (3776656566772), we obtain a palindrome (999999999999).

The spelling of 2776656566773 in words is "two trillion, seven hundred seventy-six billion, six hundred fifty-six million, five hundred sixty-six thousand, seven hundred seventy-three".