3946024320656 has 80 divisors (see below), whose sum is σ = 8374310670528. Its totient is φ = 1786380288000.

The previous prime is 3946024320649. The next prime is 3946024320709. The reversal of 3946024320656 is 6560234206493.

It is a super-2 number, since 2×3946024320656² (a number of 26 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 51341456 + ... + 51418256.

Almost surely, 2^{3946024320656} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3946024320656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4187155335264).

3946024320656 is an abundant number, since it is smaller than the sum of its proper divisors (4428286349872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3946024320656 is a wasteful number, since it uses less digits than its factorization.

3946024320656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78000 (or 77994 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 50.

The spelling of 3946024320656 in words is "three trillion, nine hundred forty-six billion, twenty-four million, three hundred twenty thousand, six hundred fifty-six".