662643222643 has 2 divisors, whose sum is σ = 662643222644. Its totient is φ = 662643222642.

The previous prime is 662643222623. The next prime is 662643222697. The reversal of 662643222643 is 346222346266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 662643222643 - 2¹⁷ = 662643091571 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 662643222593 and 662643222602.

It is not a weakly prime, because it can be changed into another prime (662643222623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331321611321 + 331321611322.

It is an arithmetic number, because the mean of its divisors is an integer number (331321611322).

Almost surely, 2^662643222643 is an apocalyptic number.

662643222643 is a deficient number, since it is larger than the sum of its proper divisors (1).

662643222643 is an equidigital number, since it uses as much as digits as its factorization.

662643222643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 46.

The spelling of 662643222643 in words is "six hundred sixty-two billion, six hundred forty-three million, two hundred twenty-two thousand, six hundred forty-three".