80312330669 has 2 divisors, whose sum is σ = 80312330670. Its totient is φ = 80312330668.

The previous prime is 80312330621. The next prime is 80312330729. The reversal of 80312330669 is 96603321308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79910809225 + 401521444 = 282685^2 + 20038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80312330669 is a prime.

It is a super-2 number, since 2×80312330669² (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 (80312330369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40156165334 + 40156165335.

It is an arithmetic number, because the mean of its divisors is an integer number (40156165335).

Almost surely, 2^80312330669 is an apocalyptic number.

It is an amenable number.

80312330669 is a deficient number, since it is larger than the sum of its proper divisors (1).

80312330669 is an equidigital number, since it uses as much as digits as its factorization.

80312330669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 80312330669 in words is "eighty billion, three hundred twelve million, three hundred thirty thousand, six hundred sixty-nine".