80780844367 has 2 divisors, whose sum is σ = 80780844368. Its totient is φ = 80780844366.

The previous prime is 80780844349. The next prime is 80780844379. The reversal of 80780844367 is 76344808708.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80780844367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80780844337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40390422183 + 40390422184.

It is an arithmetic number, because the mean of its divisors is an integer number (40390422184).

Almost surely, 2^80780844367 is an apocalyptic number.

80780844367 is a deficient number, since it is larger than the sum of its proper divisors (1).

80780844367 is an equidigital number, since it uses as much as digits as its factorization.

80780844367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 80780844367 in words is "eighty billion, seven hundred eighty million, eight hundred forty-four thousand, three hundred sixty-seven".