1234206720013 has 2 divisors, whose sum is σ = 1234206720014. Its totient is φ = 1234206720012.

The previous prime is 1234206719971. The next prime is 1234206720059. The reversal of 1234206720013 is 3100276024321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1117244772004 + 116961948009 = 1056998^2 + 341997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1234206720013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234206720413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617103360006 + 617103360007.

It is an arithmetic number, because the mean of its divisors is an integer number (617103360007).

Almost surely, 2^{1234206720013} is an apocalyptic number.

It is an amenable number.

1234206720013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234206720013 is an equidigital number, since it uses as much as digits as its factorization.

1234206720013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 1234206720013 in words is "one trillion, two hundred thirty-four billion, two hundred six million, seven hundred twenty thousand, thirteen".