1053643543553 has 4 divisors (see below), whose sum is σ = 1053645861168. Its totient is φ = 1053641225940.

The previous prime is 1053643543483. The next prime is 1053643543559. The reversal of 1053643543553 is 3553453463501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1053643543553 - 2¹⁴ = 1053643527169 is a prime.

It is a super-2 number, since 2×1053643543553² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1053643543498 and 1053643543507.

It is not an unprimeable number, because it can be changed into a prime (1053643543559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227243 + ... + 1469328.

It is an arithmetic number, because the mean of its divisors is an integer number (263411465292).

Almost surely, 2^{1053643543553} is an apocalyptic number.

It is an amenable number.

1053643543553 is a deficient number, since it is larger than the sum of its proper divisors (2317615).

1053643543553 is an equidigital number, since it uses as much as digits as its factorization.

1053643543553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317614.

The product of its (nonzero) digits is 4860000, while the sum is 47.

The spelling of 1053643543553 in words is "one trillion, fifty-three billion, six hundred forty-three million, five hundred forty-three thousand, five hundred fifty-three".