12218736646767 has 96 divisors (see below), whose sum is σ = 19630625654784. Its totient is φ = 6733532332800.

The previous prime is 12218736646763. The next prime is 12218736646769. The reversal of 12218736646767 is 76764663781221.

It is not a de Polignac number, because 12218736646767 - 2² = 12218736646763 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12218736646698 and 12218736646707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12218736646763) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2096914308 + ... + 2096920134.

It is an arithmetic number, because the mean of its divisors is an integer number (204485683904).

Almost surely, 2^{12218736646767} is an apocalyptic number.

12218736646767 is a deficient number, since it is larger than the sum of its proper divisors (7411889008017).

12218736646767 is a wasteful number, since it uses less digits than its factorization.

12218736646767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7389 (or 7382 counting only the distinct ones).

The product of its digits is 170698752, while the sum is 66.

The spelling of 12218736646767 in words is "twelve trillion, two hundred eighteen billion, seven hundred thirty-six million, six hundred forty-six thousand, seven hundred sixty-seven".