26646660006 has 8 divisors (see below), whose sum is σ = 53293320024. Its totient is φ = 8882220000.

The previous prime is 26646659999. The next prime is 26646660023. The reversal of 26646660006 is 60006664662.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

26646660006 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 26646660006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2220554995 + ... + 2220555006.

It is an arithmetic number, because the mean of its divisors is an integer number (6661665003).

Almost surely, 2^26646660006 is an apocalyptic number.

26646660006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

26646660006 is a wasteful number, since it uses less digits than its factorization.

26646660006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441110006.

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 26646660006 in words is "twenty-six billion, six hundred forty-six million, six hundred sixty thousand, six".