20324543789 has 16 divisors (see below), whose sum is σ = 23363458560. Its totient is φ = 17486190000.

The previous prime is 20324543777. The next prime is 20324543861. The reversal of 20324543789 is 98734542302.

It is a cyclic number.

It is not a de Polignac number, because 20324543789 - 2¹⁶ = 20324478253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20324543489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152864 + ... + 253014.

It is an arithmetic number, because the mean of its divisors is an integer number (1460216160).

Almost surely, 2^20324543789 is an apocalyptic number.

It is an amenable number.

20324543789 is a deficient number, since it is larger than the sum of its proper divisors (3038914771).

20324543789 is a wasteful number, since it uses less digits than its factorization.

20324543789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101152.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 20324543789 in words is "twenty billion, three hundred twenty-four million, five hundred forty-three thousand, seven hundred eighty-nine".