3819720128563 has 2 divisors, whose sum is σ = 3819720128564. Its totient is φ = 3819720128562.

The previous prime is 3819720128467. The next prime is 3819720128573. The reversal of 3819720128563 is 3658210279183.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3819720128563 is a prime.

It is not a weakly prime, because it can be changed into another prime (3819720128573) 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 as a sum of consecutive naturals, namely, 1909860064281 + 1909860064282.

It is an arithmetic number, because the mean of its divisors is an integer number (1909860064282).

Almost surely, 2^{3819720128563} is an apocalyptic number.

3819720128563 is a deficient number, since it is larger than the sum of its proper divisors (1).

3819720128563 is an equidigital number, since it uses as much as digits as its factorization.

3819720128563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 3819720128563 in words is "three trillion, eight hundred nineteen billion, seven hundred twenty million, one hundred twenty-eight thousand, five hundred sixty-three".