12683400665 has 16 divisors (see below), whose sum is σ = 16415784000. Its totient is φ = 9351959232.

The previous prime is 12683400659. The next prime is 12683400703. The reversal of 12683400665 is 56600438621.

It is a cyclic number.

It is not a de Polignac number, because 12683400665 - 2⁶ = 12683400601 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105215 + ... + 190884.

It is an arithmetic number, because the mean of its divisors is an integer number (1025986500).

Almost surely, 2^12683400665 is an apocalyptic number.

It is an amenable number.

12683400665 is a deficient number, since it is larger than the sum of its proper divisors (3732383335).

12683400665 is a wasteful number, since it uses less digits than its factorization.

12683400665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296776.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 12683400665 in words is "twelve billion, six hundred eighty-three million, four hundred thousand, six hundred sixty-five".