1320806554363 has 2 divisors, whose sum is σ = 1320806554364. Its totient is φ = 1320806554362.

The previous prime is 1320806554337. The next prime is 1320806554373. The reversal of 1320806554363 is 3634556080231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320806554363 - 2⁹ = 1320806553851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320806554373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660403277181 + 660403277182.

It is an arithmetic number, because the mean of its divisors is an integer number (660403277182).

Almost surely, 2^{1320806554363} is an apocalyptic number.

1320806554363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320806554363 is an equidigital number, since it uses as much as digits as its factorization.

1320806554363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 1320806554363 in words is "one trillion, three hundred twenty billion, eight hundred six million, five hundred fifty-four thousand, three hundred sixty-three".