1273401446543 has 2 divisors, whose sum is σ = 1273401446544. Its totient is φ = 1273401446542.

The previous prime is 1273401446533. The next prime is 1273401446557. The reversal of 1273401446543 is 3456441043721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1273401446543 - 2³⁸ = 998523539599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1273401446494 and 1273401446503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1273401446533) 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, 636700723271 + 636700723272.

It is an arithmetic number, because the mean of its divisors is an integer number (636700723272).

Almost surely, 2^{1273401446543} is an apocalyptic number.

1273401446543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273401446543 is an equidigital number, since it uses as much as digits as its factorization.

1273401446543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 1273401446543 in words is "one trillion, two hundred seventy-three billion, four hundred one million, four hundred forty-six thousand, five hundred forty-three".