80621000443 has 2 divisors, whose sum is σ = 80621000444. Its totient is φ = 80621000442.

The previous prime is 80621000417. The next prime is 80621000501. The reversal of 80621000443 is 34400012608.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80621000443 is a prime.

It is not a weakly prime, because it can be changed into another prime (80621000843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40310500221 + 40310500222.

It is an arithmetic number, because the mean of its divisors is an integer number (40310500222).

Almost surely, 2^80621000443 is an apocalyptic number.

80621000443 is a deficient number, since it is larger than the sum of its proper divisors (1).

80621000443 is an equidigital number, since it uses as much as digits as its factorization.

80621000443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 80621000443 in words is "eighty billion, six hundred twenty-one million, four hundred forty-three", and thus it is an aban number.