6388242220856 has 32 divisors (see below), whose sum is σ = 12682927674000. Its totient is φ = 3006139670016.

The previous prime is 6388242220831. The next prime is 6388242220889. The reversal of 6388242220856 is 6580222428836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3850055 + ... + 5253513.

Almost surely, 2^{6388242220856} is an apocalyptic number.

It is an amenable number.

6388242220856 is a deficient number, since it is larger than the sum of its proper divisors (6294685453144).

6388242220856 is a wasteful number, since it uses less digits than its factorization.

6388242220856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436951 (or 1436947 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 56.

The spelling of 6388242220856 in words is "six trillion, three hundred eighty-eight billion, two hundred forty-two million, two hundred twenty thousand, eight hundred fifty-six".