6111227861 has 4 divisors (see below), whose sum is σ = 6122400672. Its totient is φ = 6100055052.

The previous prime is 6111227851. The next prime is 6111227891. The reversal of 6111227861 is 1687221116.

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 not a de Polignac number, because 6111227861 - 2¹⁸ = 6110965717 is a prime.

It is a super-3 number, since 3×6111227861³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6111227831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5585585 + ... + 5586678.

It is an arithmetic number, because the mean of its divisors is an integer number (1530600168).

Almost surely, 2^6111227861 is an apocalyptic number.

It is an amenable number.

6111227861 is a deficient number, since it is larger than the sum of its proper divisors (11172811).

6111227861 is a wasteful number, since it uses less digits than its factorization.

6111227861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11172810.

The product of its digits is 8064, while the sum is 35.

The square root of 6111227861 is about 78174.3427282891. The cubic root of 6111227861 is about 1828.2804934741.

Adding to 6111227861 its reverse (1687221116), we get a palindrome (7798448977).

The spelling of 6111227861 in words is "six billion, one hundred eleven million, two hundred twenty-seven thousand, eight hundred sixty-one".