666148338149 has 8 divisors (see below), whose sum is σ = 762002615040. Its totient is φ = 570466618416.

The previous prime is 666148338127. The next prime is 666148338197. The reversal of 666148338149 is 941833841666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666148338149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666148338109) 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, 43131014 + ... + 43146455.

It is an arithmetic number, because the mean of its divisors is an integer number (95250326880).

Almost surely, 2^666148338149 is an apocalyptic number.

It is an amenable number.

666148338149 is a deficient number, since it is larger than the sum of its proper divisors (95854276891).

666148338149 is a wasteful number, since it uses less digits than its factorization.

666148338149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86278579.

The product of its digits is 17915904, while the sum is 59.

The spelling of 666148338149 in words is "six hundred sixty-six billion, one hundred forty-eight million, three hundred thirty-eight thousand, one hundred forty-nine".