3221543630256 has 40 divisors (see below), whose sum is σ = 9511224052224. Its totient is φ = 920441037120.

The previous prime is 3221543630251. The next prime is 3221543630267. The reversal of 3221543630256 is 6520363451223.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (3221543630251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4793963400 + ... + 4793964071.

Almost surely, 2^{3221543630256} is an apocalyptic number.

It is an amenable number.

3221543630256 is an abundant number, since it is smaller than the sum of its proper divisors (6289680421968).

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

3221543630256 is a wasteful number, since it uses less digits than its factorization.

3221543630256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9587927489 (or 9587927483 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 3221543630256 in words is "three trillion, two hundred twenty-one billion, five hundred forty-three million, six hundred thirty thousand, two hundred fifty-six".