6556666667233 has 4 divisors (see below), whose sum is σ = 6556814447508. Its totient is φ = 6556518886960.

The previous prime is 6556666667219. The next prime is 6556666667249. The reversal of 6556666667233 is 3327666666556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 935442955489 + 5621223711744 = 967183^2 + 2370912^2 .

It is a cyclic number.

It is not a de Polignac number, because 6556666667233 - 2³⁷ = 6419227713761 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6556666667203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73823566 + ... + 73912327.

It is an arithmetic number, because the mean of its divisors is an integer number (1639203611877).

Almost surely, 2^{6556666667233} is an apocalyptic number.

It is an amenable number.

6556666667233 is a deficient number, since it is larger than the sum of its proper divisors (147780275).

6556666667233 is a wasteful number, since it uses less digits than its factorization.

6556666667233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147780274.

The product of its digits is 881798400, while the sum is 67.

The spelling of 6556666667233 in words is "six trillion, five hundred fifty-six billion, six hundred sixty-six million, six hundred sixty-seven thousand, two hundred thirty-three".