10091638666 has 8 divisors (see below), whose sum is σ = 15204143520. Its totient is φ = 5023590828.

The previous prime is 10091638643. The next prime is 10091638673. The reversal of 10091638666 is 66683619001.

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

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, 11113686 + ... + 11114593.

It is an arithmetic number, because the mean of its divisors is an integer number (1900517940).

Almost surely, 2^10091638666 is an apocalyptic number.

10091638666 is a deficient number, since it is larger than the sum of its proper divisors (5112504854).

10091638666 is a wasteful number, since it uses less digits than its factorization.

10091638666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22228508.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 10091638666 in words is "ten billion, ninety-one million, six hundred thirty-eight thousand, six hundred sixty-six".