80278978627 has 2 divisors, whose sum is σ = 80278978628. Its totient is φ = 80278978626.

The previous prime is 80278978609. The next prime is 80278978631. The reversal of 80278978627 is 72687987208.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80278978627 - 2⁷ = 80278978499 is a prime.

It is not a weakly prime, because it can be changed into another prime (80278978667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40139489313 + 40139489314.

It is an arithmetic number, because the mean of its divisors is an integer number (40139489314).

Almost surely, 2^80278978627 is an apocalyptic number.

80278978627 is a deficient number, since it is larger than the sum of its proper divisors (1).

80278978627 is an equidigital number, since it uses as much as digits as its factorization.

80278978627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37933056, while the sum is 64.

The spelling of 80278978627 in words is "eighty billion, two hundred seventy-eight million, nine hundred seventy-eight thousand, six hundred twenty-seven".