6111085107861 has 12 divisors (see below), whose sum is σ = 8827478887500. Its totient is φ = 4073892452160.

The previous prime is 6111085107857. The next prime is 6111085107901. The reversal of 6111085107861 is 1687015801116.

6111085107861 is a `hidden beast` number, since 6 + 1 + 1 + 1 + 0 + 8 + 510 + 78 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3242106342225 + 2868978765636 = 1800585^2 + 1693806^2 .

It is not a de Polignac number, because 6111085107861 - 2² = 6111085107857 is a prime.

It is a super-2 number, since 2×6111085107861² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6111085107811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13454736 + ... + 13901513.

It is an arithmetic number, because the mean of its divisors is an integer number (735623240625).

Almost surely, 2^{6111085107861} is an apocalyptic number.

It is an amenable number.

6111085107861 is a deficient number, since it is larger than the sum of its proper divisors (2716393779639).

6111085107861 is a wasteful number, since it uses less digits than its factorization.

6111085107861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27381076 (or 27381073 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 45.

The spelling of 6111085107861 in words is "six trillion, one hundred eleven billion, eighty-five million, one hundred seven thousand, eight hundred sixty-one".