6128668668215 has 16 divisors (see below), whose sum is σ = 7534069472160. Its totient is φ = 4783166138880.

The previous prime is 6128668668181. The next prime is 6128668668251. The reversal of 6128668668215 is 5128668668216.

It is a de Polignac number, because none of the positive numbers 2^k-6128668668215 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4859147 + ... + 5989043.

It is an arithmetic number, because the mean of its divisors is an integer number (470879342010).

Almost surely, 2^{6128668668215} is an apocalyptic number.

6128668668215 is a deficient number, since it is larger than the sum of its proper divisors (1405400803945).

6128668668215 is a wasteful number, since it uses less digits than its factorization.

6128668668215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156402.

The product of its digits is 79626240, while the sum is 65.

Subtracting from 6128668668215 its reverse (5128668668216), we obtain a palindrome (999999999999).

The spelling of 6128668668215 in words is "six trillion, one hundred twenty-eight billion, six hundred sixty-eight million, six hundred sixty-eight thousand, two hundred fifteen".