2216785347641 has 2 divisors, whose sum is σ = 2216785347642. Its totient is φ = 2216785347640.

The previous prime is 2216785347631. The next prime is 2216785347709. The reversal of 2216785347641 is 1467435876122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1881914805241 + 334870542400 = 1371829^2 + 578680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2216785347641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2216785347631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108392673820 + 1108392673821.

It is an arithmetic number, because the mean of its divisors is an integer number (1108392673821).

Almost surely, 2^{2216785347641} is an apocalyptic number.

It is an amenable number.

2216785347641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216785347641 is an equidigital number, since it uses as much as digits as its factorization.

2216785347641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13547520, while the sum is 56.

The spelling of 2216785347641 in words is "two trillion, two hundred sixteen billion, seven hundred eighty-five million, three hundred forty-seven thousand, six hundred forty-one".