12838312666 has 8 divisors (see below), whose sum is σ = 19354240800. Its totient is φ = 6386899068.

The previous prime is 12838312649. The next prime is 12838312667. The reversal of 12838312666 is 66621383821.

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

It is not an unprimeable number, because it can be changed into a prime (12838312667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16128136 + ... + 16128931.

It is an arithmetic number, because the mean of its divisors is an integer number (2419280100).

Almost surely, 2^12838312666 is an apocalyptic number.

12838312666 is a deficient number, since it is larger than the sum of its proper divisors (6515928134).

12838312666 is a wasteful number, since it uses less digits than its factorization.

12838312666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32257268.

The product of its digits is 497664, while the sum is 46.

The spelling of 12838312666 in words is "twelve billion, eight hundred thirty-eight million, three hundred twelve thousand, six hundred sixty-six".