12918641606 has 16 divisors (see below), whose sum is σ = 21053257344. Its totient is φ = 5909683584.

The previous prime is 12918641591. The next prime is 12918641621. The reversal of 12918641606 is 60614681921.

It is an interprime number because it is at equal distance from previous prime (12918641591) and next prime (12918641621).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2195606 + ... + 2201481.

It is an arithmetic number, because the mean of its divisors is an integer number (1315828584).

Almost surely, 2^12918641606 is an apocalyptic number.

12918641606 is a deficient number, since it is larger than the sum of its proper divisors (8134615738).

12918641606 is a wasteful number, since it uses less digits than its factorization.

12918641606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397215.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 12918641606 in words is "twelve billion, nine hundred eighteen million, six hundred forty-one thousand, six hundred six".