3216281136640 has 960 divisors, whose sum is σ = 9713698283520. Its totient is φ = 1011651379200.

The previous prime is 3216281136533. The next prime is 3216281136667. The reversal of 3216281136640 is 466311826123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9716861275 + ... + 9716861605.

It is an arithmetic number, because the mean of its divisors is an integer number (10118435712).

Almost surely, 2^{3216281136640} 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 3216281136640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4856849141760).

3216281136640 is an abundant number, since it is smaller than the sum of its proper divisors (6497417146880).

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

3216281136640 is a wasteful number, since it uses less digits than its factorization.

3216281136640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 3216281136640 in words is "three trillion, two hundred sixteen billion, two hundred eighty-one million, one hundred thirty-six thousand, six hundred forty".