12661275144 has 32 divisors (see below), whose sum is σ = 36175072320. Its totient is φ = 3617507136.

The previous prime is 12661275071. The next prime is 12661275163. The reversal of 12661275144 is 44157216621.

12661275144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12661275144³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37682199 + ... + 37682534.

It is an arithmetic number, because the mean of its divisors is an integer number (1130471010).

Almost surely, 2^12661275144 is an apocalyptic number.

12661275144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12661275144 is an abundant number, since it is smaller than the sum of its proper divisors (23513797176).

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

12661275144 is a wasteful number, since it uses less digits than its factorization.

12661275144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75364749 (or 75364745 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The spelling of 12661275144 in words is "twelve billion, six hundred sixty-one million, two hundred seventy-five thousand, one hundred forty-four".