20301543205 has 16 divisors (see below), whose sum is σ = 24827243904. Its totient is φ = 15931115200.

The previous prime is 20301543179. The next prime is 20301543233. The reversal of 20301543205 is 50234510302.

It is not a de Polignac number, because 20301543205 - 2¹³ = 20301535013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20301543205.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1994880 + ... + 2005030.

It is an arithmetic number, because the mean of its divisors is an integer number (1551702744).

Almost surely, 2^20301543205 is an apocalyptic number.

It is an amenable number.

20301543205 is a deficient number, since it is larger than the sum of its proper divisors (4525700699).

20301543205 is a wasteful number, since it uses less digits than its factorization.

20301543205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17756.

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

It can be divided in two parts, 20 and 301543205, that added together give a square (301543225 = 17365²).

The spelling of 20301543205 in words is "twenty billion, three hundred one million, five hundred forty-three thousand, two hundred five".