12660875145 has 24 divisors (see below), whose sum is σ = 22004381256. Its totient is φ = 6734354688.

The previous prime is 12660875141. The next prime is 12660875167. The reversal of 12660875145 is 54157806621.

12660875145 is a `hidden beast` number, since 1 + 26 + 608 + 7 + 5 + 14 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 955366281 + 11705508864 = 30909^2 + 108192^2 .

It is not a de Polignac number, because 12660875145 - 2² = 12660875141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12660875145.

It is not an unprimeable number, because it can be changed into a prime (12660875141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 360364 + ... + 393933.

It is an arithmetic number, because the mean of its divisors is an integer number (916849219).

Almost surely, 2^12660875145 is an apocalyptic number.

12660875145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12660875145 is a deficient number, since it is larger than the sum of its proper divisors (9343506111).

12660875145 is a wasteful number, since it uses less digits than its factorization.

12660875145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754681 (or 754678 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 12660875145 in words is "twelve billion, six hundred sixty million, eight hundred seventy-five thousand, one hundred forty-five".