6111111555667 has 4 divisors (see below), whose sum is σ = 6155718209496. Its totient is φ = 6066504901840.

The previous prime is 6111111555649. The next prime is 6111111555673. The reversal of 6111111555667 is 7665551111116.

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

It is a cyclic number.

It is not a de Polignac number, because 6111111555667 - 2³¹ = 6108964072019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6111111555617) 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, 22303326709 + ... + 22303326982.

It is an arithmetic number, because the mean of its divisors is an integer number (1538929552374).

Almost surely, 2^{6111111555667} is an apocalyptic number.

6111111555667 is a deficient number, since it is larger than the sum of its proper divisors (44606653829).

6111111555667 is a wasteful number, since it uses less digits than its factorization.

6111111555667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44606653828.

The product of its digits is 189000, while the sum is 46.

The spelling of 6111111555667 in words is "six trillion, one hundred eleven billion, one hundred eleven million, five hundred fifty-five thousand, six hundred sixty-seven".