643222088336 has 20 divisors (see below), whose sum is σ = 1246473792000. Its totient is φ = 321551432352.

The previous prime is 643222088281. The next prime is 643222088347. The reversal of 643222088336 is 633880222346.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3636656 + ... + 3809423.

It is an arithmetic number, because the mean of its divisors is an integer number (62323689600).

Almost surely, 2^643222088336 is an apocalyptic number.

It is an amenable number.

643222088336 is a deficient number, since it is larger than the sum of its proper divisors (603251703664).

643222088336 is a wasteful number, since it uses less digits than its factorization.

643222088336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451486 (or 7451480 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 47.

The spelling of 643222088336 in words is "six hundred forty-three billion, two hundred twenty-two million, eighty-eight thousand, three hundred thirty-six".