12216179653 has 2 divisors, whose sum is σ = 12216179654. Its totient is φ = 12216179652.

The previous prime is 12216179627. The next prime is 12216179659. The reversal of 12216179653 is 35697161221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6415529409 + 5800650244 = 80097^2 + 76162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12216179653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12216179659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6108089826 + 6108089827.

It is an arithmetic number, because the mean of its divisors is an integer number (6108089827).

Almost surely, 2^12216179653 is an apocalyptic number.

It is an amenable number.

12216179653 is a deficient number, since it is larger than the sum of its proper divisors (1).

12216179653 is an equidigital number, since it uses as much as digits as its factorization.

12216179653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The spelling of 12216179653 in words is "twelve billion, two hundred sixteen million, one hundred seventy-nine thousand, six hundred fifty-three".