1445728571863 has 2 divisors, whose sum is σ = 1445728571864. Its totient is φ = 1445728571862.

The previous prime is 1445728571857. The next prime is 1445728571891. The reversal of 1445728571863 is 3681758275441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1445728571863 - 2⁹ = 1445728571351 is a prime.

It is a super-2 number, since 2×1445728571863² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445728571843) 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, 722864285931 + 722864285932.

It is an arithmetic number, because the mean of its divisors is an integer number (722864285932).

Almost surely, 2^{1445728571863} is an apocalyptic number.

1445728571863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445728571863 is an equidigital number, since it uses as much as digits as its factorization.

1445728571863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45158400, while the sum is 61.

The spelling of 1445728571863 in words is "one trillion, four hundred forty-five billion, seven hundred twenty-eight million, five hundred seventy-one thousand, eight hundred sixty-three".