5543155143521 has 2 divisors, whose sum is σ = 5543155143522. Its totient is φ = 5543155143520.

The previous prime is 5543155143481. The next prime is 5543155143593. The reversal of 5543155143521 is 1253415513455.

5543155143521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5460073422400 + 83081721121 = 2336680^2 + 288239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5543155143521 is a prime.

It is not a weakly prime, because it can be changed into another prime (5543155133521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2771577571760 + 2771577571761.

It is an arithmetic number, because the mean of its divisors is an integer number (2771577571761).

Almost surely, 2^{5543155143521} is an apocalyptic number.

It is an amenable number.

5543155143521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5543155143521 is an equidigital number, since it uses as much as digits as its factorization.

5543155143521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900000, while the sum is 44.

The spelling of 5543155143521 in words is "five trillion, five hundred forty-three billion, one hundred fifty-five million, one hundred forty-three thousand, five hundred twenty-one".