2188020806423 has 2 divisors, whose sum is σ = 2188020806424. Its totient is φ = 2188020806422.

The previous prime is 2188020806359. The next prime is 2188020806467. The reversal of 2188020806423 is 3246080208812.

It is an a-pointer prime, because the next prime (2188020806467) can be obtained adding 2188020806423 to its sum of digits (44).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2188020806423 - 2⁶ = 2188020806359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2188020806473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094010403211 + 1094010403212.

It is an arithmetic number, because the mean of its divisors is an integer number (1094010403212).

Almost surely, 2^{2188020806423} is an apocalyptic number.

2188020806423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188020806423 is an equidigital number, since it uses as much as digits as its factorization.

2188020806423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 2188020806423 in words is "two trillion, one hundred eighty-eight billion, twenty million, eight hundred six thousand, four hundred twenty-three".