6111538641 has 64 divisors (see below), whose sum is σ = 10431590400. Its totient is φ = 3502891008.

The previous prime is 6111538637. The next prime is 6111538661. The reversal of 6111538641 is 1468351116.

It is a happy number.

6111538641 is a `hidden beast` number, since 6 + 1 + 1 + 1 + 5 + 3 + 8 + 641 = 666.

It is not a de Polignac number, because 6111538641 - 2² = 6111538637 is a prime.

It is a super-2 number, since 2×6111538641² = 74701809120872253762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6111538596 and 6111538605.

It is not an unprimeable number, because it can be changed into a prime (6111538661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 573520 + ... + 584078.

It is an arithmetic number, because the mean of its divisors is an integer number (162993600).

Almost surely, 2^6111538641 is an apocalyptic number.

It is an amenable number.

6111538641 is a deficient number, since it is larger than the sum of its proper divisors (4320051759).

6111538641 is a wasteful number, since it uses less digits than its factorization.

6111538641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10695 (or 10689 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 6111538641 is about 78176.3304395902. The cubic root of 6111538641 is about 1828.3114847028.

Adding to 6111538641 its reverse (1468351116), we get a palindrome (7579889757).

The spelling of 6111538641 in words is "six billion, one hundred eleven million, five hundred thirty-eight thousand, six hundred forty-one".