6511506656105 has 32 divisors (see below), whose sum is σ = 8731906634880. Its totient is φ = 4621394936320.

The previous prime is 6511506656089. The next prime is 6511506656131. The reversal of 6511506656105 is 5016566051156.

6511506656105 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6511506656105 - 2⁴ = 6511506656089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6511506656105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6878894 + ... + 7768023.

It is an arithmetic number, because the mean of its divisors is an integer number (272872082340).

Almost surely, 2^{6511506656105} is an apocalyptic number.

It is an amenable number.

6511506656105 is a deficient number, since it is larger than the sum of its proper divisors (2220399978775).

6511506656105 is a wasteful number, since it uses less digits than its factorization.

6511506656105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14647129.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 6511506656105 in words is "six trillion, five hundred eleven billion, five hundred six million, six hundred fifty-six thousand, one hundred five".