80665110107819 has 2 divisors, whose sum is σ = 80665110107820. Its totient is φ = 80665110107818.

The previous prime is 80665110107783. The next prime is 80665110107821. The reversal of 80665110107819 is 91870101156608.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80665110107819 is a prime.

It is a super-2 number, since 2×80665110107819² (a number of 29 digits) contains 22 as substring.

Together with 80665110107821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80665110107849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40332555053909 + 40332555053910.

It is an arithmetic number, because the mean of its divisors is an integer number (40332555053910).

Almost surely, 2^{80665110107819} is an apocalyptic number.

80665110107819 is a deficient number, since it is larger than the sum of its proper divisors (1).

80665110107819 is an equidigital number, since it uses as much as digits as its factorization.

80665110107819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 53.

The spelling of 80665110107819 in words is "eighty trillion, six hundred sixty-five billion, one hundred ten million, one hundred seven thousand, eight hundred nineteen".