24545143213 has 4 divisors (see below), whose sum is σ = 25208525500. Its totient is φ = 23881760928.

The previous prime is 24545143187. The next prime is 24545143297. The reversal of 24545143213 is 31234154542.

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 13914089764 + 10631053449 = 117958^2 + 103107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24545143213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24545143313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331691088 + ... + 331691161.

It is an arithmetic number, because the mean of its divisors is an integer number (6302131375).

Almost surely, 2^24545143213 is an apocalyptic number.

It is an amenable number.

24545143213 is a deficient number, since it is larger than the sum of its proper divisors (663382287).

24545143213 is an equidigital number, since it uses as much as digits as its factorization.

24545143213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663382286.

The product of its digits is 57600, while the sum is 34.

Adding to 24545143213 its reverse (31234154542), we get a palindrome (55779297755).

The spelling of 24545143213 in words is "twenty-four billion, five hundred forty-five million, one hundred forty-three thousand, two hundred thirteen".