6511065478 has 16 divisors (see below), whose sum is σ = 9982080000. Its totient is φ = 3184260552.

The previous prime is 6511065403. The next prime is 6511065497. The reversal of 6511065478 is 8745601156.

It is a congruent number.

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, 115158 + ... + 162121.

It is an arithmetic number, because the mean of its divisors is an integer number (623880000).

Almost surely, 2^6511065478 is an apocalyptic number.

6511065478 is a deficient number, since it is larger than the sum of its proper divisors (3471014522).

6511065478 is a wasteful number, since it uses less digits than its factorization.

6511065478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277539.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 6511065478 is about 80691.1734826059. The cubic root of 6511065478 is about 1867.3140041771.

The spelling of 6511065478 in words is "six billion, five hundred eleven million, sixty-five thousand, four hundred seventy-eight".