1543513355161 has 2 divisors, whose sum is σ = 1543513355162. Its totient is φ = 1543513355160.

The previous prime is 1543513355149. The next prime is 1543513355177. The reversal of 1543513355161 is 1615533153451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 879223153561 + 664290201600 = 937669^2 + 815040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1543513355161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1543513355141) 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, 771756677580 + 771756677581.

It is an arithmetic number, because the mean of its divisors is an integer number (771756677581).

Almost surely, 2^{1543513355161} is an apocalyptic number.

It is an amenable number.

1543513355161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1543513355161 is an equidigital number, since it uses as much as digits as its factorization.

1543513355161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 405000, while the sum is 43.

The spelling of 1543513355161 in words is "one trillion, five hundred forty-three billion, five hundred thirteen million, three hundred fifty-five thousand, one hundred sixty-one".