6666426216 has 48 divisors (see below), whose sum is σ = 18065580000. Its totient is φ = 2220828192.

The previous prime is 6666426209. The next prime is 6666426227. The reversal of 6666426216 is 6126246666.

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

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 99285 + ... + 152283.

It is an arithmetic number, because the mean of its divisors is an integer number (376366250).

Almost surely, 2^6666426216 is an apocalyptic number.

It is an amenable number.

6666426216 is an abundant number, since it is smaller than the sum of its proper divisors (11399153784).

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

6666426216 is a wasteful number, since it uses less digits than its factorization.

6666426216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54758 (or 54751 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 6666426216 is about 81648.1856258913. The cubic root of 6666426216 is about 1882.0494302160.

The spelling of 6666426216 in words is "six billion, six hundred sixty-six million, four hundred twenty-six thousand, two hundred sixteen".