80514776791 has 4 divisors (see below), whose sum is σ = 80610742800. Its totient is φ = 80418810784.

The previous prime is 80514776773. The next prime is 80514776821. The reversal of 80514776791 is 19767741508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80514776791 - 2⁵ = 80514776759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80514776701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47981746 + ... + 47983423.

It is an arithmetic number, because the mean of its divisors is an integer number (20152685700).

Almost surely, 2^80514776791 is an apocalyptic number.

80514776791 is a deficient number, since it is larger than the sum of its proper divisors (95966009).

80514776791 is an equidigital number, since it uses as much as digits as its factorization.

80514776791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95966008.

The product of its (nonzero) digits is 2963520, while the sum is 55.

The spelling of 80514776791 in words is "eighty billion, five hundred fourteen million, seven hundred seventy-six thousand, seven hundred ninety-one".