1668100111826 has 16 divisors (see below), whose sum is σ = 2515070891520. Its totient is φ = 829743887280.

The previous prime is 1668100111801. The next prime is 1668100111861. The reversal of 1668100111826 is 6281110018661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4485761 + ... + 4843371.

It is an arithmetic number, because the mean of its divisors is an integer number (157191930720).

Almost surely, 2^{1668100111826} is an apocalyptic number.

1668100111826 is a deficient number, since it is larger than the sum of its proper divisors (846970779694).

1668100111826 is a wasteful number, since it uses less digits than its factorization.

1668100111826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369649.

The product of its (nonzero) digits is 27648, while the sum is 41.

The spelling of 1668100111826 in words is "one trillion, six hundred sixty-eight billion, one hundred million, one hundred eleven thousand, eight hundred twenty-six".