80491745099 has 2 divisors, whose sum is σ = 80491745100. Its totient is φ = 80491745098.

The previous prime is 80491745083. The next prime is 80491745101. The reversal of 80491745099 is 99054719408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80491745099 - 2⁴ = 80491745083 is a prime.

Together with 80491745101, 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 (80491745899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40245872549 + 40245872550.

It is an arithmetic number, because the mean of its divisors is an integer number (40245872550).

Almost surely, 2^80491745099 is an apocalyptic number.

80491745099 is a deficient number, since it is larger than the sum of its proper divisors (1).

80491745099 is an equidigital number, since it uses as much as digits as its factorization.

80491745099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 80491745099 in words is "eighty billion, four hundred ninety-one million, seven hundred forty-five thousand, ninety-nine".