3256643265200 has 120 divisors (see below), whose sum is σ = 8426893956768. Its totient is φ = 1202316503040.

The previous prime is 3256643265193. The next prime is 3256643265203. The reversal of 3256643265200 is 25623466523.

It is not an unprimeable number, because it can be changed into a prime (3256643265203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53597237 + ... + 53657963.

Almost surely, 2^{3256643265200} 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 3256643265200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4213446978384).

3256643265200 is an abundant number, since it is smaller than the sum of its proper divisors (5170250691568).

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

3256643265200 is a wasteful number, since it uses less digits than its factorization.

3256643265200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71071 (or 71060 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 44.

The spelling of 3256643265200 in words is "three trillion, two hundred fifty-six billion, six hundred forty-three million, two hundred sixty-five thousand, two hundred".