6445796065280 has 384 divisors, whose sum is σ = 18274884582240. Its totient is φ = 2163521617920.

The previous prime is 6445796065237. The next prime is 6445796065307. The reversal of 6445796065280 is 825606975446.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304567979 + ... + 304589141.

Almost surely, 2^{6445796065280} 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 6445796065280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9137442291120).

6445796065280 is an abundant number, since it is smaller than the sum of its proper divisors (11829088516960).

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

6445796065280 is a wasteful number, since it uses less digits than its factorization.

6445796065280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21235 (or 21194 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 62.

The spelling of 6445796065280 in words is "six trillion, four hundred forty-five billion, seven hundred ninety-six million, sixty-five thousand, two hundred eighty".