20867099903 has 32 divisors (see below), whose sum is σ = 23174726400. Its totient is φ = 18668975616.

The previous prime is 20867099893. The next prime is 20867099927. The reversal of 20867099903 is 30999076802.

It is a cyclic number.

It is not a de Polignac number, because 20867099903 - 2¹⁴ = 20867083519 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 (20867099003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40996013 + ... + 40996521.

It is an arithmetic number, because the mean of its divisors is an integer number (724210200).

Almost surely, 2^20867099903 is an apocalyptic number.

20867099903 is a deficient number, since it is larger than the sum of its proper divisors (2307626497).

20867099903 is a wasteful number, since it uses less digits than its factorization.

20867099903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The spelling of 20867099903 in words is "twenty billion, eight hundred sixty-seven million, ninety-nine thousand, nine hundred three".