20145774203 has 2 divisors, whose sum is σ = 20145774204. Its totient is φ = 20145774202.

The previous prime is 20145774179. The next prime is 20145774217. The reversal of 20145774203 is 30247754102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20145774203 - 2⁶ = 20145774139 is a prime.

It is not a weakly prime, because it can be changed into another prime (20145774263) 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 as a sum of consecutive naturals, namely, 10072887101 + 10072887102.

It is an arithmetic number, because the mean of its divisors is an integer number (10072887102).

Almost surely, 2^20145774203 is an apocalyptic number.

20145774203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20145774203 is an equidigital number, since it uses as much as digits as its factorization.

20145774203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 35.

The spelling of 20145774203 in words is "twenty billion, one hundred forty-five million, seven hundred seventy-four thousand, two hundred three".