6945617743321 has 2 divisors, whose sum is σ = 6945617743322. Its totient is φ = 6945617743320.

The previous prime is 6945617743291. The next prime is 6945617743331. The reversal of 6945617743321 is 1233477165496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6847961493321 + 97656250000 = 2616861^2 + 312500^2 .

It is a cyclic number.

It is not a de Polignac number, because 6945617743321 - 2³⁹ = 6395861929433 is a prime.

It is not a weakly prime, because it can be changed into another prime (6945617743331) 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, 3472808871660 + 3472808871661.

It is an arithmetic number, because the mean of its divisors is an integer number (3472808871661).

Almost surely, 2^{6945617743321} is an apocalyptic number.

It is an amenable number.

6945617743321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6945617743321 is an equidigital number, since it uses as much as digits as its factorization.

6945617743321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 58.

The spelling of 6945617743321 in words is "six trillion, nine hundred forty-five billion, six hundred seventeen million, seven hundred forty-three thousand, three hundred twenty-one".