80696522509 has 2 divisors, whose sum is σ = 80696522510. Its totient is φ = 80696522508.

The previous prime is 80696522461. The next prime is 80696522519. The reversal of 80696522509 is 90522569608.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79793820484 + 902702025 = 282478^2 + 30045^2 .

It is a cyclic number.

It is not a de Polignac number, because 80696522509 - 2⁷ = 80696522381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80696522519) 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, 40348261254 + 40348261255.

It is an arithmetic number, because the mean of its divisors is an integer number (40348261255).

Almost surely, 2^80696522509 is an apocalyptic number.

It is an amenable number.

80696522509 is a deficient number, since it is larger than the sum of its proper divisors (1).

80696522509 is an equidigital number, since it uses as much as digits as its factorization.

80696522509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 80696522509 in words is "eighty billion, six hundred ninety-six million, five hundred twenty-two thousand, five hundred nine".