1013530543621 has 2 divisors, whose sum is σ = 1013530543622. Its totient is φ = 1013530543620.

The previous prime is 1013530543591. The next prime is 1013530543651. The reversal of 1013530543621 is 1263450353101.

1013530543621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (1013530543591) and next prime (1013530543651).

It can be written as a sum of positive squares in only one way, i.e., 1003392873025 + 10137670596 = 1001695^2 + 100686^2 .

It is an emirp because it is prime and its reverse (1263450353101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1013530543621 - 2²³ = 1013522155013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013530543651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506765271810 + 506765271811.

It is an arithmetic number, because the mean of its divisors is an integer number (506765271811).

Almost surely, 2^{1013530543621} is an apocalyptic number.

It is an amenable number.

1013530543621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013530543621 is an equidigital number, since it uses as much as digits as its factorization.

1013530543621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 1013530543621 its reverse (1263450353101), we get a palindrome (2276980896722).

The spelling of 1013530543621 in words is "one trillion, thirteen billion, five hundred thirty million, five hundred forty-three thousand, six hundred twenty-one".