666148338153 has 12 divisors (see below), whose sum is σ = 962224829748. Its totient is φ = 444094016640.

The previous prime is 666148338127. The next prime is 666148338197. The reversal of 666148338153 is 351833841666.

It can be written as a sum of positive squares in 2 ways, for example, as 272722083984 + 393426254169 = 522228^2 + 627237^2 .

It is not a de Polignac number, because 666148338153 - 2²⁵ = 666114783721 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 666148338153.

It is not an unprimeable number, because it can be changed into a prime (666148338113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586813 + ... + 1294853.

It is an arithmetic number, because the mean of its divisors is an integer number (80185402479).

Almost surely, 2^666148338153 is an apocalyptic number.

It is an amenable number.

666148338153 is a deficient number, since it is larger than the sum of its proper divisors (296076491595).

666148338153 is a wasteful number, since it uses less digits than its factorization.

666148338153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812584 (or 812581 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 666148338153 in words is "six hundred sixty-six billion, one hundred forty-eight million, three hundred thirty-eight thousand, one hundred fifty-three".