6465450980 has 24 divisors (see below), whose sum is σ = 13581018360. Its totient is φ = 2585500160.

The previous prime is 6465450961. The next prime is 6465451021. The reversal of 6465450980 is 890545646.

It can be written as a sum of positive squares in 4 ways, for example, as 663886756 + 5801564224 = 25766^2 + 76168^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39260 + ... + 120300.

It is an arithmetic number, because the mean of its divisors is an integer number (565875765).

Almost surely, 2^6465450980 is an apocalyptic number.

It is an amenable number.

6465450980 is an abundant number, since it is smaller than the sum of its proper divisors (7115567380).

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

6465450980 is a wasteful number, since it uses less digits than its factorization.

6465450980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85039 (or 85037 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 47.

The square root of 6465450980 is about 80408.0280817780. The cubic root of 6465450980 is about 1862.9431744524.

The spelling of 6465450980 in words is "six billion, four hundred sixty-five million, four hundred fifty thousand, nine hundred eighty".