656213216003 has 2 divisors, whose sum is σ = 656213216004. Its totient is φ = 656213216002.

The previous prime is 656213215981. The next prime is 656213216011. The reversal of 656213216003 is 300612312656.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-656213216003 is a prime.

It is not a weakly prime, because it can be changed into another prime (656213216023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328106608001 + 328106608002.

It is an arithmetic number, because the mean of its divisors is an integer number (328106608002).

Almost surely, 2^656213216003 is an apocalyptic number.

656213216003 is a deficient number, since it is larger than the sum of its proper divisors (1).

656213216003 is an equidigital number, since it uses as much as digits as its factorization.

656213216003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 656213216003 its reverse (300612312656), we get a palindrome (956825528659).

The spelling of 656213216003 in words is "six hundred fifty-six billion, two hundred thirteen million, two hundred sixteen thousand, three".