1533542856449 has 2 divisors, whose sum is σ = 1533542856450. Its totient is φ = 1533542856448.

The previous prime is 1533542856413. The next prime is 1533542856479. The reversal of 1533542856449 is 9446582453351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1472339560000 + 61203296449 = 1213400^2 + 247393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1533542856449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1533542856409) 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, 766771428224 + 766771428225.

It is an arithmetic number, because the mean of its divisors is an integer number (766771428225).

Almost surely, 2^{1533542856449} is an apocalyptic number.

It is an amenable number.

1533542856449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1533542856449 is an equidigital number, since it uses as much as digits as its factorization.

1533542856449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208000, while the sum is 59.

The spelling of 1533542856449 in words is "one trillion, five hundred thirty-three billion, five hundred forty-two million, eight hundred fifty-six thousand, four hundred forty-nine".