1353221165537 has 2 divisors, whose sum is σ = 1353221165538. Its totient is φ = 1353221165536.

The previous prime is 1353221165531. The next prime is 1353221165563. The reversal of 1353221165537 is 7355611223531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1128005429776 + 225215735761 = 1062076^2 + 474569^2 .

It is an emirp because it is prime and its reverse (7355611223531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1353221165537 - 2⁶ = 1353221165473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1353221165531) 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, 676610582768 + 676610582769.

It is an arithmetic number, because the mean of its divisors is an integer number (676610582769).

Almost surely, 2^{1353221165537} is an apocalyptic number.

It is an amenable number.

1353221165537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1353221165537 is an equidigital number, since it uses as much as digits as its factorization.

1353221165537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 44.

The spelling of 1353221165537 in words is "one trillion, three hundred fifty-three billion, two hundred twenty-one million, one hundred sixty-five thousand, five hundred thirty-seven".