1320688883947 has 2 divisors, whose sum is σ = 1320688883948. Its totient is φ = 1320688883946.

The previous prime is 1320688883923. The next prime is 1320688883963. The reversal of 1320688883947 is 7493888860231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320688883947 - 2²³ = 1320680495339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320688883447) 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, 660344441973 + 660344441974.

It is an arithmetic number, because the mean of its divisors is an integer number (660344441974).

Almost surely, 2^{1320688883947} is an apocalyptic number.

1320688883947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320688883947 is an equidigital number, since it uses as much as digits as its factorization.

1320688883947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111476736, while the sum is 67.

The spelling of 1320688883947 in words is "one trillion, three hundred twenty billion, six hundred eighty-eight million, eight hundred eighty-three thousand, nine hundred forty-seven".