20000218999 has 2 divisors, whose sum is σ = 20000219000. Its totient is φ = 20000218998.

The previous prime is 20000218981. The next prime is 20000219123. The reversal of 20000218999 is 99981200002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20000218999 - 2²⁵ = 19966664567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000218099) 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 as a sum of consecutive naturals, namely, 10000109499 + 10000109500.

It is an arithmetic number, because the mean of its divisors is an integer number (10000109500).

Almost surely, 2^20000218999 is an apocalyptic number.

20000218999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000218999 is an equidigital number, since it uses as much as digits as its factorization.

20000218999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 20000218999 in words is "twenty billion, two hundred eighteen thousand, nine hundred ninety-nine".