80628805447 has 2 divisors, whose sum is σ = 80628805448. Its totient is φ = 80628805446.

The previous prime is 80628805429. The next prime is 80628805459. The reversal of 80628805447 is 74450882608.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80628805447 - 2⁷ = 80628805319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80628805394 and 80628805403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80628805247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40314402723 + 40314402724.

It is an arithmetic number, because the mean of its divisors is an integer number (40314402724).

Almost surely, 2^80628805447 is an apocalyptic number.

80628805447 is a deficient number, since it is larger than the sum of its proper divisors (1).

80628805447 is an equidigital number, since it uses as much as digits as its factorization.

80628805447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3440640, while the sum is 52.

The spelling of 80628805447 in words is "eighty billion, six hundred twenty-eight million, eight hundred five thousand, four hundred forty-seven".