20204504501099 has 2 divisors, whose sum is σ = 20204504501100. Its totient is φ = 20204504501098.

The previous prime is 20204504501087. The next prime is 20204504501179. The reversal of 20204504501099 is 99010540540202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20204504501099 - 2²⁴ = 20204487723883 is a prime.

It is not a weakly prime, because it can be changed into another prime (20204504501899) 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, 10102252250549 + 10102252250550.

It is an arithmetic number, because the mean of its divisors is an integer number (10102252250550).

Almost surely, 2^{20204504501099} is an apocalyptic number.

20204504501099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204504501099 is an equidigital number, since it uses as much as digits as its factorization.

20204504501099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 20204504501099 in words is "twenty trillion, two hundred four billion, five hundred four million, five hundred one thousand, ninety-nine".