20350203667 has 4 divisors (see below), whose sum is σ = 20365895176. Its totient is φ = 20334512160.

The previous prime is 20350203659. The next prime is 20350203703. The reversal of 20350203667 is 76630205302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20350203667 - 2³ = 20350203659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20350203637) 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, 7843809 + ... + 7846402.

It is an arithmetic number, because the mean of its divisors is an integer number (5091473794).

Almost surely, 2^20350203667 is an apocalyptic number.

20350203667 is a deficient number, since it is larger than the sum of its proper divisors (15691509).

20350203667 is a wasteful number, since it uses less digits than its factorization.

20350203667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15691508.

The product of its (nonzero) digits is 45360, while the sum is 34.

Adding to 20350203667 its reverse (76630205302), we get a palindrome (96980408969).

The spelling of 20350203667 in words is "twenty billion, three hundred fifty million, two hundred three thousand, six hundred sixty-seven".