12116661065 has 8 divisors (see below), whose sum is σ = 14542374528. Its totient is φ = 9691741360.

The previous prime is 12116661059. The next prime is 12116661101. The reversal of 12116661065 is 56016661121.

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

It is not a de Polignac number, because 12116661065 - 2³² = 7821693769 is a prime.

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, 164321 + ... + 226350.

It is an arithmetic number, because the mean of its divisors is an integer number (1817796816).

Almost surely, 2^12116661065 is an apocalyptic number.

It is an amenable number.

12116661065 is a deficient number, since it is larger than the sum of its proper divisors (2425713463).

12116661065 is an equidigital number, since it uses as much as digits as its factorization.

12116661065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396879.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 12116661065 in words is "twelve billion, one hundred sixteen million, six hundred sixty-one thousand, sixty-five".