85813812453563 has 2 divisors, whose sum is σ = 85813812453564. Its totient is φ = 85813812453562.

The previous prime is 85813812453559. The next prime is 85813812453637. The reversal of 85813812453563 is 36535421831858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85813812453563 - 2² = 85813812453559 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 85813812453496 and 85813812453505.

It is not a weakly prime, because it can be changed into another prime (85813812453533) 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, 42906906226781 + 42906906226782.

It is an arithmetic number, because the mean of its divisors is an integer number (42906906226782).

Almost surely, 2^{85813812453563} is an apocalyptic number.

85813812453563 is a deficient number, since it is larger than the sum of its proper divisors (1).

85813812453563 is an equidigital number, since it uses as much as digits as its factorization.

85813812453563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944000, while the sum is 62.

The spelling of 85813812453563 in words is "eighty-five trillion, eight hundred thirteen billion, eight hundred twelve million, four hundred fifty-three thousand, five hundred sixty-three".