6511016061111 has 4 divisors (see below), whose sum is σ = 8681354748152. Its totient is φ = 4340677374072.

The previous prime is 6511016061041. The next prime is 6511016061161. The reversal of 6511016061111 is 1111606101156.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-6511016061111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6511016061161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085169343516 + ... + 1085169343521.

It is an arithmetic number, because the mean of its divisors is an integer number (2170338687038).

Almost surely, 2^{6511016061111} is an apocalyptic number.

6511016061111 is a deficient number, since it is larger than the sum of its proper divisors (2170338687041).

6511016061111 is a wasteful number, since it uses less digits than its factorization.

6511016061111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170338687040.

The product of its (nonzero) digits is 1080, while the sum is 30.

The spelling of 6511016061111 in words is "six trillion, five hundred eleven billion, sixteen million, sixty-one thousand, one hundred eleven".