80021816627 has 2 divisors, whose sum is σ = 80021816628. Its totient is φ = 80021816626.

The previous prime is 80021816603. The next prime is 80021816639. The reversal of 80021816627 is 72661812008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80021816627 - 2¹⁰ = 80021815603 is a prime.

It is a super-2 number, since 2×80021816627² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80021816647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40010908313 + 40010908314.

It is an arithmetic number, because the mean of its divisors is an integer number (40010908314).

Almost surely, 2^80021816627 is an apocalyptic number.

80021816627 is a deficient number, since it is larger than the sum of its proper divisors (1).

80021816627 is an equidigital number, since it uses as much as digits as its factorization.

80021816627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 80021816627 in words is "eighty billion, twenty-one million, eight hundred sixteen thousand, six hundred twenty-seven".