80021816603 has 2 divisors, whose sum is σ = 80021816604. Its totient is φ = 80021816602.

The previous prime is 80021816593. The next prime is 80021816627. The reversal of 80021816603 is 30661812008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80021816603 - 2¹⁴ = 80021800219 is a prime.

It is a super-2 number, since 2×80021816603² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80021815603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40010908301 + 40010908302.

It is an arithmetic number, because the mean of its divisors is an integer number (40010908302).

Almost surely, 2^80021816603 is an apocalyptic number.

80021816603 is a deficient number, since it is larger than the sum of its proper divisors (1).

80021816603 is an equidigital number, since it uses as much as digits as its factorization.

80021816603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 80021816603 in words is "eighty billion, twenty-one million, eight hundred sixteen thousand, six hundred three".