80858745091 has 2 divisors, whose sum is σ = 80858745092. Its totient is φ = 80858745090.

The previous prime is 80858745089. The next prime is 80858745103. The reversal of 80858745091 is 19054785808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80858745091 - 2¹ = 80858745089 is a prime.

Together with 80858745089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80858745491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40429372545 + 40429372546.

It is an arithmetic number, because the mean of its divisors is an integer number (40429372546).

Almost surely, 2^80858745091 is an apocalyptic number.

80858745091 is a deficient number, since it is larger than the sum of its proper divisors (1).

80858745091 is an equidigital number, since it uses as much as digits as its factorization.

80858745091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3225600, while the sum is 55.

The spelling of 80858745091 in words is "eighty billion, eight hundred fifty-eight million, seven hundred forty-five thousand, ninety-one".