1333663544981 has 2 divisors, whose sum is σ = 1333663544982. Its totient is φ = 1333663544980.

The previous prime is 1333663544953. The next prime is 1333663545017. The reversal of 1333663544981 is 1894453663331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1135415982481 + 198247562500 = 1065559^2 + 445250^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333663544981 - 2¹⁴ = 1333663528597 is a prime.

It is a super-2 number, since 2×1333663544981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1333663547981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666831772490 + 666831772491.

It is an arithmetic number, because the mean of its divisors is an integer number (666831772491).

Almost surely, 2^{1333663544981} is an apocalyptic number.

It is an amenable number.

1333663544981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1333663544981 is an equidigital number, since it uses as much as digits as its factorization.

1333663544981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16796160, while the sum is 56.

The spelling of 1333663544981 in words is "one trillion, three hundred thirty-three billion, six hundred sixty-three million, five hundred forty-four thousand, nine hundred eighty-one".