20503350123 has 8 divisors (see below), whose sum is σ = 28945906128. Its totient is φ = 12864847104.

The previous prime is 20503350107. The next prime is 20503350137. The reversal of 20503350123 is 32105330502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20503350123 - 2⁴ = 20503350107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20503350093 and 20503350102.

It is not an unprimeable number, because it can be changed into a prime (20503350103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201013186 + ... + 201013287.

It is an arithmetic number, because the mean of its divisors is an integer number (3618238266).

Almost surely, 2^20503350123 is an apocalyptic number.

20503350123 is a deficient number, since it is larger than the sum of its proper divisors (8442556005).

20503350123 is a wasteful number, since it uses less digits than its factorization.

20503350123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402026493.

The product of its (nonzero) digits is 2700, while the sum is 24.

Adding to 20503350123 its reverse (32105330502), we get a palindrome (52608680625).

The spelling of 20503350123 in words is "twenty billion, five hundred three million, three hundred fifty thousand, one hundred twenty-three".