20005950503 has 8 divisors (see below), whose sum is σ = 24942483840. Its totient is φ = 15589052280.

The previous prime is 20005950491. The next prime is 20005950511. The reversal of 20005950503 is 30505950002.

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

It is a cyclic number.

It is not a de Polignac number, because 20005950503 - 2⁸ = 20005950247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005950403) 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, 129908693 + ... + 129908846.

It is an arithmetic number, because the mean of its divisors is an integer number (3117810480).

Almost surely, 2^20005950503 is an apocalyptic number.

20005950503 is a deficient number, since it is larger than the sum of its proper divisors (4936533337).

20005950503 is a wasteful number, since it uses less digits than its factorization.

20005950503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259817557.

The product of its (nonzero) digits is 6750, while the sum is 29.

The spelling of 20005950503 in words is "twenty billion, five million, nine hundred fifty thousand, five hundred three".