1275328276543 has 2 divisors, whose sum is σ = 1275328276544. Its totient is φ = 1275328276542.

The previous prime is 1275328276531. The next prime is 1275328276583. The reversal of 1275328276543 is 3456728235721.

It is a weak prime.

It is an emirp because it is prime and its reverse (3456728235721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1275328276543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275328276583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637664138271 + 637664138272.

It is an arithmetic number, because the mean of its divisors is an integer number (637664138272).

Almost surely, 2^{1275328276543} is an apocalyptic number.

1275328276543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275328276543 is an equidigital number, since it uses as much as digits as its factorization.

1275328276543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16934400, while the sum is 55.

The spelling of 1275328276543 in words is "one trillion, two hundred seventy-five billion, three hundred twenty-eight million, two hundred seventy-six thousand, five hundred forty-three".