20543305102 has 8 divisors (see below), whose sum is σ = 31566542112. Its totient is φ = 10021124400.

The previous prime is 20543305067. The next prime is 20543305103. The reversal of 20543305102 is 20150334502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20543305103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125263974 + ... + 125264137.

It is an arithmetic number, because the mean of its divisors is an integer number (3945817764).

Almost surely, 2^20543305102 is an apocalyptic number.

20543305102 is a deficient number, since it is larger than the sum of its proper divisors (11023237010).

20543305102 is a wasteful number, since it uses less digits than its factorization.

20543305102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250528154.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 20543305102 its reverse (20150334502), we get a palindrome (40693639604).

The spelling of 20543305102 in words is "twenty billion, five hundred forty-three million, three hundred five thousand, one hundred two".