2146123234729 has 2 divisors, whose sum is σ = 2146123234730. Its totient is φ = 2146123234728.

The previous prime is 2146123234691. The next prime is 2146123234747. The reversal of 2146123234729 is 9274323216412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1597594881600 + 548528353129 = 1263960^2 + 740627^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146123234729 - 2²³ = 2146114846121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2146121234729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073061617364 + 1073061617365.

It is an arithmetic number, because the mean of its divisors is an integer number (1073061617365).

Almost surely, 2^{2146123234729} is an apocalyptic number.

It is an amenable number.

2146123234729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146123234729 is an equidigital number, since it uses as much as digits as its factorization.

2146123234729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The spelling of 2146123234729 in words is "two trillion, one hundred forty-six billion, one hundred twenty-three million, two hundred thirty-four thousand, seven hundred twenty-nine".