20544532000045 has 4 divisors (see below), whose sum is σ = 24653438400060. Its totient is φ = 16435625600032.

The previous prime is 20544532000039. The next prime is 20544532000121. The reversal of 20544532000045 is 54000023544502.

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 8523486089001 + 12021045911044 = 2919501^2 + 3467138^2 .

It is a cyclic number.

It is not a de Polignac number, because 20544532000045 - 2¹³ = 20544531991853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2054453200000 + ... + 2054453200009.

It is an arithmetic number, because the mean of its divisors is an integer number (6163359600015).

Almost surely, 2^{20544532000045} is an apocalyptic number.

It is an amenable number.

20544532000045 is a deficient number, since it is larger than the sum of its proper divisors (4108906400015).

20544532000045 is an equidigital number, since it uses as much as digits as its factorization.

20544532000045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108906400014.

The product of its (nonzero) digits is 96000, while the sum is 34.

Adding to 20544532000045 its reverse (54000023544502), we get a palindrome (74544555544547).

The spelling of 20544532000045 in words is "twenty trillion, five hundred forty-four billion, five hundred thirty-two million, forty-five", and thus it is an aban number.