20550273403 has 8 divisors (see below), whose sum is σ = 23598400320. Its totient is φ = 17698799880.

The previous prime is 20550273383. The next prime is 20550273431. The reversal of 20550273403 is 30437205502.

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 20550273403 - 2¹⁷ = 20550142331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20550273803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49163125 + ... + 49163542.

It is an arithmetic number, because the mean of its divisors is an integer number (2949800040).

Almost surely, 2^20550273403 is an apocalyptic number.

20550273403 is a deficient number, since it is larger than the sum of its proper divisors (3048126917).

20550273403 is a wasteful number, since it uses less digits than its factorization.

20550273403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98326697.

The product of its (nonzero) digits is 25200, while the sum is 31.

Adding to 20550273403 its reverse (30437205502), we get a palindrome (50987478905).

The spelling of 20550273403 in words is "twenty billion, five hundred fifty million, two hundred seventy-three thousand, four hundred three".