646382226002 has 18 divisors (see below), whose sum is σ = 1023323514309. Its totient is φ = 306170821440.

The previous prime is 646382225969. The next prime is 646382226043. The reversal of 646382226002 is 200622283646.

It can be written as a sum of positive squares in 2 ways, for example, as 634108023481 + 12274202521 = 796309^2 + 110789^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=568499.

It is a Duffinian number.

It is an unprimeable number.

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 in 8 ways as a sum of consecutive naturals, for example, 21588002 + ... + 21617922.

Almost surely, 2^646382226002 is an apocalyptic number.

646382226002 is a deficient number, since it is larger than the sum of its proper divisors (376941288307).

646382226002 is an frugal number, since it uses more digits than its factorization.

646382226002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59882 (or 29942 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 646382226002 in words is "six hundred forty-six billion, three hundred eighty-two million, two hundred twenty-six thousand, two".