10166561115566 has 8 divisors (see below), whose sum is σ = 16146891183600. Its totient is φ = 4784264054368.

The previous prime is 10166561115559. The next prime is 10166561115589. The reversal of 10166561115566 is 66551116566101.

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

It is a congruent number.

It is an unprimeable number.

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, 149508251666 + ... + 149508251733.

It is an arithmetic number, because the mean of its divisors is an integer number (2018361397950).

Almost surely, 2^{10166561115566} is an apocalyptic number.

10166561115566 is a deficient number, since it is larger than the sum of its proper divisors (5980330068034).

10166561115566 is a wasteful number, since it uses less digits than its factorization.

10166561115566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299016503418.

The product of its (nonzero) digits is 972000, while the sum is 50.

The spelling of 10166561115566 in words is "ten trillion, one hundred sixty-six billion, five hundred sixty-one million, one hundred fifteen thousand, five hundred sixty-six".