1346861080777 has 2 divisors, whose sum is σ = 1346861080778. Its totient is φ = 1346861080776.

The previous prime is 1346861080759. The next prime is 1346861080811. The reversal of 1346861080777 is 7770801686431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1228187031696 + 118674049081 = 1108236^2 + 344491^2 .

It is a cyclic number.

It is not a de Polignac number, because 1346861080777 - 2¹¹ = 1346861078729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1346861080717) 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, 673430540388 + 673430540389.

It is an arithmetic number, because the mean of its divisors is an integer number (673430540389).

Almost surely, 2^{1346861080777} is an apocalyptic number.

It is an amenable number.

1346861080777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1346861080777 is an equidigital number, since it uses as much as digits as its factorization.

1346861080777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9483264, while the sum is 58.

The spelling of 1346861080777 in words is "one trillion, three hundred forty-six billion, eight hundred sixty-one million, eighty thousand, seven hundred seventy-seven".