6495880780 has 24 divisors (see below), whose sum is σ = 13659307200. Its totient is φ = 2594931840.

The previous prime is 6495880679. The next prime is 6495880793. The reversal of 6495880780 is 870885946.

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, 198180 + ... + 228619.

It is an arithmetic number, because the mean of its divisors is an integer number (569137800).

Almost surely, 2^6495880780 is an apocalyptic number.

It is an amenable number.

6495880780 is an abundant number, since it is smaller than the sum of its proper divisors (7163426420).

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

6495880780 is a wasteful number, since it uses less digits than its factorization.

6495880780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427569 (or 427567 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The square root of 6495880780 is about 80597.0271163893. The cubic root of 6495880780 is about 1865.8612634444.

The spelling of 6495880780 in words is "six billion, four hundred ninety-five million, eight hundred eighty thousand, seven hundred eighty".