20803520343 has 16 divisors (see below), whose sum is σ = 28036746080. Its totient is φ = 13720427136.

The previous prime is 20803520333. The next prime is 20803520411. The reversal of 20803520343 is 34302530802.

It is not a de Polignac number, because 20803520343 - 2¹³ = 20803512151 is a prime.

It is a super-2 number, since 2×20803520343² (a number of 21 digits) contains 22 as substring.

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 20803520343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20803520323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11421 + ... + 204297.

It is an arithmetic number, because the mean of its divisors is an integer number (1752296630).

Almost surely, 2^20803520343 is an apocalyptic number.

20803520343 is a deficient number, since it is larger than the sum of its proper divisors (7233225737).

20803520343 is a wasteful number, since it uses less digits than its factorization.

20803520343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193266.

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 20803520343 in words is "twenty billion, eight hundred three million, five hundred twenty thousand, three hundred forty-three".