1243064426333 has 6 divisors (see below), whose sum is σ = 1272645193374. Its totient is φ = 1214155949496.

The previous prime is 1243064426321. The next prime is 1243064426473. The reversal of 1243064426333 is 3336244603421.

It can be written as a sum of positive squares in only one way, i.e., 1242339847609 + 724578724 = 1114603^2 + 26918^2 .

It is not a de Polignac number, because 1243064426333 - 2³⁰ = 1241990684509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243064426033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 336143210 + ... + 336146907.

It is an arithmetic number, because the mean of its divisors is an integer number (212107532229).

Almost surely, 2^{1243064426333} is an apocalyptic number.

It is an amenable number.

1243064426333 is a deficient number, since it is larger than the sum of its proper divisors (29580767041).

1243064426333 is an frugal number, since it uses more digits than its factorization.

1243064426333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672290203 (or 672290160 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 41.

The spelling of 1243064426333 in words is "one trillion, two hundred forty-three billion, sixty-four million, four hundred twenty-six thousand, three hundred thirty-three".