12344666385 has 16 divisors (see below), whose sum is σ = 19826573184. Its totient is φ = 6558786432.

The previous prime is 12344666381. The next prime is 12344666401. The reversal of 12344666385 is 58366644321.

It is not a de Polignac number, because 12344666385 - 2² = 12344666381 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12344666381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1560652 + ... + 1568541.

It is an arithmetic number, because the mean of its divisors is an integer number (1239160824).

Almost surely, 2^12344666385 is an apocalyptic number.

12344666385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12344666385 is a deficient number, since it is larger than the sum of its proper divisors (7481906799).

12344666385 is a wasteful number, since it uses less digits than its factorization.

12344666385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129464.

The product of its digits is 2488320, while the sum is 48.

The spelling of 12344666385 in words is "twelve billion, three hundred forty-four million, six hundred sixty-six thousand, three hundred eighty-five".