80738817469 has 2 divisors, whose sum is σ = 80738817470. Its totient is φ = 80738817468.

The previous prime is 80738817449. The next prime is 80738817529. The reversal of 80738817469 is 96471883708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55148416569 + 25590400900 = 234837^2 + 159970^2 .

It is a cyclic number.

It is not a de Polignac number, because 80738817469 - 2¹⁷ = 80738686397 is a prime.

It is a super-2 number, since 2×80738817469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80738817449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40369408734 + 40369408735.

It is an arithmetic number, because the mean of its divisors is an integer number (40369408735).

Almost surely, 2^80738817469 is an apocalyptic number.

It is an amenable number.

80738817469 is a deficient number, since it is larger than the sum of its proper divisors (1).

80738817469 is an equidigital number, since it uses as much as digits as its factorization.

80738817469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 80738817469 in words is "eighty billion, seven hundred thirty-eight million, eight hundred seventeen thousand, four hundred sixty-nine".