105666111536665 has 8 divisors (see below), whose sum is σ = 126799421899968. Its totient is φ = 84532830525360.

The previous prime is 105666111536633. The next prime is 105666111536683. The reversal of 105666111536665 is 566635111666501.

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

It is not a de Polignac number, because 105666111536665 - 2⁵ = 105666111536633 is a prime.

It is a super-2 number, since 2×105666111536665² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563594 + ... + 14621116.

It is an arithmetic number, because the mean of its divisors is an integer number (15849927737496).

Almost surely, 2^{105666111536665} is an apocalyptic number.

It is an amenable number.

105666111536665 is a deficient number, since it is larger than the sum of its proper divisors (21133310363303).

105666111536665 is a wasteful number, since it uses less digits than its factorization.

105666111536665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14675999.

The product of its (nonzero) digits is 17496000, while the sum is 58.

The spelling of 105666111536665 in words is "one hundred five trillion, six hundred sixty-six billion, one hundred eleven million, five hundred thirty-six thousand, six hundred sixty-five".