20050203867 has 32 divisors (see below), whose sum is σ = 27270856704. Its totient is φ = 13101782400.

The previous prime is 20050203863. The next prime is 20050203913. The reversal of 20050203867 is 76830205002.

It is not a de Polignac number, because 20050203867 - 2² = 20050203863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20050203863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11515617 + ... + 11517357.

It is an arithmetic number, because the mean of its divisors is an integer number (852214272).

Almost surely, 2^20050203867 is an apocalyptic number.

20050203867 is a deficient number, since it is larger than the sum of its proper divisors (7220652837).

20050203867 is a wasteful number, since it uses less digits than its factorization.

20050203867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219.

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 20050203867 its reverse (76830205002), we get a palindrome (96880408869).

The spelling of 20050203867 in words is "twenty billion, fifty million, two hundred three thousand, eight hundred sixty-seven".