12660026112 has 72 divisors (see below), whose sum is σ = 37437944880. Its totient is φ = 4220006400.

The previous prime is 12660026111. The next prime is 12660026143. The reversal of 12660026112 is 21162006621.

12660026112 is a `hidden beast` number, since 1 + 26 + 600 + 26 + 1 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×12660026112² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12660026111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908889 + ... + 922712.

Almost surely, 2^12660026112 is an apocalyptic number.

12660026112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12660026112 is an abundant number, since it is smaller than the sum of its proper divisors (24777918768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12660026112 is an equidigital number, since it uses as much as digits as its factorization.

12660026112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831626 (or 1831606 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 12660026112 in words is "twelve billion, six hundred sixty million, twenty-six thousand, one hundred twelve".