6111247109 has 4 divisors (see below), whose sum is σ = 6666815040. Its totient is φ = 5555679180.

The previous prime is 6111247073. The next prime is 6111247127. The reversal of 6111247109 is 9017421116.

It is a happy number.

6111247109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6111247109 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 (6111267109) 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, 277783949 + ... + 277783970.

It is an arithmetic number, because the mean of its divisors is an integer number (1666703760).

Almost surely, 2^6111247109 is an apocalyptic number.

It is an amenable number.

6111247109 is a deficient number, since it is larger than the sum of its proper divisors (555567931).

6111247109 is a wasteful number, since it uses less digits than its factorization.

6111247109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555567930.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 6111247109 is about 78174.4658376378. The cubic root of 6111247109 is about 1828.2824129305.

The spelling of 6111247109 in words is "six billion, one hundred eleven million, two hundred forty-seven thousand, one hundred nine".