320427016646 has 48 divisors (see below), whose sum is σ = 556782746832. Its totient is φ = 136686067200.

The previous prime is 320427016639. The next prime is 320427016681. The reversal of 320427016646 is 646610724023.

It is a super-3 number, since 3×320427016646³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 23 ways as a sum of consecutive naturals, for example, 50370506 + ... + 50376866.

It is an arithmetic number, because the mean of its divisors is an integer number (11599640559).

Almost surely, 2^320427016646 is an apocalyptic number.

320427016646 is a deficient number, since it is larger than the sum of its proper divisors (236355730186).

320427016646 is a wasteful number, since it uses less digits than its factorization.

320427016646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7125 (or 6758 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 320427016646 in words is "three hundred twenty billion, four hundred twenty-seven million, sixteen thousand, six hundred forty-six".