1280998403303 has 2 divisors, whose sum is σ = 1280998403304. Its totient is φ = 1280998403302.

The previous prime is 1280998403287. The next prime is 1280998403389. The reversal of 1280998403303 is 3033048990821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1280998403303 - 2⁴ = 1280998403287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1280998403393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640499201651 + 640499201652.

It is an arithmetic number, because the mean of its divisors is an integer number (640499201652).

Almost surely, 2^{1280998403303} is an apocalyptic number.

1280998403303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280998403303 is an equidigital number, since it uses as much as digits as its factorization.

1280998403303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 1280998403303 in words is "one trillion, two hundred eighty billion, nine hundred ninety-eight million, four hundred three thousand, three hundred three".