1320644551307 has 2 divisors, whose sum is σ = 1320644551308. Its totient is φ = 1320644551306.

The previous prime is 1320644551301. The next prime is 1320644551339. The reversal of 1320644551307 is 7031554460231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320644551307 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320644551301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660322275653 + 660322275654.

It is an arithmetic number, because the mean of its divisors is an integer number (660322275654).

Almost surely, 2^{1320644551307} is an apocalyptic number.

1320644551307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320644551307 is an equidigital number, since it uses as much as digits as its factorization.

1320644551307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 1320644551307 in words is "one trillion, three hundred twenty billion, six hundred forty-four million, five hundred fifty-one thousand, three hundred seven".