12381787279 has 2 divisors, whose sum is σ = 12381787280. Its totient is φ = 12381787278.

The previous prime is 12381787267. The next prime is 12381787291. The reversal of 12381787279 is 97278718321.

It is a balanced prime because it is at equal distance from previous prime (12381787267) and next prime (12381787291).

It is a cyclic number.

It is not a de Polignac number, because 12381787279 - 2¹¹ = 12381785231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12381787219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6190893639 + 6190893640.

It is an arithmetic number, because the mean of its divisors is an integer number (6190893640).

Almost surely, 2^12381787279 is an apocalyptic number.

12381787279 is a deficient number, since it is larger than the sum of its proper divisors (1).

12381787279 is an equidigital number, since it uses as much as digits as its factorization.

12381787279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816, while the sum is 55.

The spelling of 12381787279 in words is "twelve billion, three hundred eighty-one million, seven hundred eighty-seven thousand, two hundred seventy-nine".