6480978518 has 16 divisors (see below), whose sum is σ = 11162909184. Its totient is φ = 2764397160.

The previous prime is 6480978509. The next prime is 6480978521. The reversal of 6480978518 is 8158790846.

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, 1094030 + ... + 1099937.

It is an arithmetic number, because the mean of its divisors is an integer number (697681824).

Almost surely, 2^6480978518 is an apocalyptic number.

6480978518 is a deficient number, since it is larger than the sum of its proper divisors (4681930666).

6480978518 is a wasteful number, since it uses less digits than its factorization.

6480978518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194187.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The square root of 6480978518 is about 80504.5248293535. The cubic root of 6480978518 is about 1864.4333409151.

The spelling of 6480978518 in words is "six billion, four hundred eighty million, nine hundred seventy-eight thousand, five hundred eighteen".