80628805429 has 2 divisors, whose sum is σ = 80628805430. Its totient is φ = 80628805428.

The previous prime is 80628805393. The next prime is 80628805447. The reversal of 80628805429 is 92450882608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54482562225 + 26146243204 = 233415^2 + 161698^2 .

It is a cyclic number.

It is not a de Polignac number, because 80628805429 - 2¹⁹ = 80628281141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80628805459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40314402714 + 40314402715.

It is an arithmetic number, because the mean of its divisors is an integer number (40314402715).

Almost surely, 2^80628805429 is an apocalyptic number.

It is an amenable number.

80628805429 is a deficient number, since it is larger than the sum of its proper divisors (1).

80628805429 is an equidigital number, since it uses as much as digits as its factorization.

80628805429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 80628805429 in words is "eighty billion, six hundred twenty-eight million, eight hundred five thousand, four hundred twenty-nine".