6216666126 has 96 divisors (see below), whose sum is σ = 14446481280. Its totient is φ = 1777152960.

The previous prime is 6216666121. The next prime is 6216666139.

It is a happy number.

6216666126 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6216666121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3820125 + ... + 3821751.

It is an arithmetic number, because the mean of its divisors is an integer number (150484180).

Almost surely, 2^6216666126 is an apocalyptic number.

6216666126 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6216666126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7223240640).

6216666126 is an abundant number, since it is smaller than the sum of its proper divisors (8229815154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6216666126 is a wasteful number, since it uses less digits than its factorization.

6216666126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950 (or 1939 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 6216666126 is about 78845.8377214676. The cubic root of 6216666126 is about 1838.7351623591.

The spelling of 6216666126 in words is "six billion, two hundred sixteen million, six hundred sixty-six thousand, one hundred twenty-six".