80750975317891 has 2 divisors, whose sum is σ = 80750975317892. Its totient is φ = 80750975317890.

The previous prime is 80750975317867. The next prime is 80750975317933. The reversal of 80750975317891 is 19871357905708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80750975317891 - 2³⁷ = 80613536364419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80750975317891.

It is not a weakly prime, because it can be changed into another prime (80750975317841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40375487658945 + 40375487658946.

It is an arithmetic number, because the mean of its divisors is an integer number (40375487658946).

Almost surely, 2^{80750975317891} is an apocalyptic number.

80750975317891 is a deficient number, since it is larger than the sum of its proper divisors (1).

80750975317891 is an equidigital number, since it uses as much as digits as its factorization.

80750975317891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 133358400, while the sum is 70.

The spelling of 80750975317891 in words is "eighty trillion, seven hundred fifty billion, nine hundred seventy-five million, three hundred seventeen thousand, eight hundred ninety-one".