12018707543729 has 2 divisors, whose sum is σ = 12018707543730. Its totient is φ = 12018707543728.

The previous prime is 12018707543719. The next prime is 12018707543743. The reversal of 12018707543729 is 92734570781021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9716144087329 + 2302563456400 = 3117073^2 + 1517420^2 .

It is a cyclic number.

It is not a de Polignac number, because 12018707543729 - 2⁸ = 12018707543473 is a prime.

It is not a weakly prime, because it can be changed into another prime (12018707543719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6009353771864 + 6009353771865.

It is an arithmetic number, because the mean of its divisors is an integer number (6009353771865).

Almost surely, 2^{12018707543729} is an apocalyptic number.

It is an amenable number.

12018707543729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12018707543729 is an equidigital number, since it uses as much as digits as its factorization.

12018707543729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 56.

The spelling of 12018707543729 in words is "twelve trillion, eighteen billion, seven hundred seven million, five hundred forty-three thousand, seven hundred twenty-nine".