20203350169 has 4 divisors (see below), whose sum is σ = 20305905444. Its totient is φ = 20100794896.

The previous prime is 20203350149. The next prime is 20203350187. The reversal of 20203350169 is 96105330202.

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 15074928400 + 5128421769 = 122780^2 + 71613^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203350169 - 2¹⁵ = 20203317401 is a prime.

It is a super-2 number, since 2×20203350169² (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 20203350169.

It is not an unprimeable number, because it can be changed into a prime (20203350109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51277342 + ... + 51277735.

It is an arithmetic number, because the mean of its divisors is an integer number (5076476361).

Almost surely, 2^20203350169 is an apocalyptic number.

It is an amenable number.

20203350169 is a deficient number, since it is larger than the sum of its proper divisors (102555275).

20203350169 is a wasteful number, since it uses less digits than its factorization.

20203350169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102555274.

The product of its (nonzero) digits is 9720, while the sum is 31.

The spelling of 20203350169 in words is "twenty billion, two hundred three million, three hundred fifty thousand, one hundred sixty-nine".