80212416858517 has 2 divisors, whose sum is σ = 80212416858518. Its totient is φ = 80212416858516.

The previous prime is 80212416858481. The next prime is 80212416858521. The reversal of 80212416858517 is 71585861421208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71934977139601 + 8277439718916 = 8481449^2 + 2877054^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80212416858517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80212416858817) 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, 40106208429258 + 40106208429259.

It is an arithmetic number, because the mean of its divisors is an integer number (40106208429259).

Almost surely, 2^{80212416858517} is an apocalyptic number.

It is an amenable number.

80212416858517 is a deficient number, since it is larger than the sum of its proper divisors (1).

80212416858517 is an equidigital number, since it uses as much as digits as its factorization.

80212416858517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8601600, while the sum is 58.

The spelling of 80212416858517 in words is "eighty trillion, two hundred twelve billion, four hundred sixteen million, eight hundred fifty-eight thousand, five hundred seventeen".