1024543204661 has 4 divisors (see below), whose sum is σ = 1084810452012. Its totient is φ = 964275957312.

The previous prime is 1024543204639. The next prime is 1024543204669. The reversal of 1024543204661 is 1664023454201.

1024543204661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 828635166436 + 195908038225 = 910294^2 + 442615^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1024543204661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024543204669) 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, 30133623650 + ... + 30133623683.

It is an arithmetic number, because the mean of its divisors is an integer number (271202613003).

Almost surely, 2^{1024543204661} is an apocalyptic number.

It is an amenable number.

1024543204661 is a deficient number, since it is larger than the sum of its proper divisors (60267247351).

1024543204661 is an equidigital number, since it uses as much as digits as its factorization.

1024543204661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60267247350.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 1024543204661 its reverse (1664023454201), we get a palindrome (2688566658862).

The spelling of 1024543204661 in words is "one trillion, twenty-four billion, five hundred forty-three million, two hundred four thousand, six hundred sixty-one".