12666061185 has 16 divisors (see below), whose sum is σ = 20267188224. Its totient is φ = 6754735872.

The previous prime is 12666061183. The next prime is 12666061229. The reversal of 12666061185 is 58116066621.

It is not a de Polignac number, because 12666061185 - 2¹ = 12666061183 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12666061183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280704 + ... + 322686.

It is an arithmetic number, because the mean of its divisors is an integer number (1266699264).

Almost surely, 2^12666061185 is an apocalyptic number.

12666061185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12666061185 is a deficient number, since it is larger than the sum of its proper divisors (7601127039).

12666061185 is a wasteful number, since it uses less digits than its factorization.

12666061185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62104.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 12666061185 in words is "twelve billion, six hundred sixty-six million, sixty-one thousand, one hundred eighty-five".