1284379553533 has 2 divisors, whose sum is σ = 1284379553534. Its totient is φ = 1284379553532.

The previous prime is 1284379553437. The next prime is 1284379553551. The reversal of 1284379553533 is 3353559734821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1283297011929 + 1082541604 = 1132827^2 + 32902^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284379553533 - 2²⁹ = 1283842682621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284379523533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642189776766 + 642189776767.

It is an arithmetic number, because the mean of its divisors is an integer number (642189776767).

Almost surely, 2^{1284379553533} is an apocalyptic number.

It is an amenable number.

1284379553533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284379553533 is an equidigital number, since it uses as much as digits as its factorization.

1284379553533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824000, while the sum is 58.

The spelling of 1284379553533 in words is "one trillion, two hundred eighty-four billion, three hundred seventy-nine million, five hundred fifty-three thousand, five hundred thirty-three".