17796820646 has 16 divisors (see below), whose sum is σ = 29249249040. Its totient is φ = 8054136480.

The previous prime is 17796820631. The next prime is 17796820667. The reversal of 17796820646 is 64602869771.

It is a junction number, because it is equal to n+sod(n) for n = 17796820591 and 17796820600.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1761221 + ... + 1771296.

It is an arithmetic number, because the mean of its divisors is an integer number (1828078065).

Almost surely, 2^17796820646 is an apocalyptic number.

17796820646 is a deficient number, since it is larger than the sum of its proper divisors (11452428394).

17796820646 is a wasteful number, since it uses less digits than its factorization.

17796820646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532759.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 17796820646 in words is "seventeen billion, seven hundred ninety-six million, eight hundred twenty thousand, six hundred forty-six".