80924318785 has 4 divisors (see below), whose sum is σ = 97109182548. Its totient is φ = 64739455024.

The previous prime is 80924318737. The next prime is 80924318903. The reversal of 80924318785 is 58781342908.

It is a Cunningham number, because it is equal to 284472²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29133027856 + 51791290929 = 170684^2 + 227577^2 .

It is a cyclic number.

It is not a de Polignac number, because 80924318785 - 2²³ = 80915930177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8092431874 + ... + 8092431883.

It is an arithmetic number, because the mean of its divisors is an integer number (24277295637).

Almost surely, 2^80924318785 is an apocalyptic number.

It is an amenable number.

80924318785 is a deficient number, since it is larger than the sum of its proper divisors (16184863763).

80924318785 is a wasteful number, since it uses less digits than its factorization.

80924318785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16184863762.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 80924318785 in words is "eighty billion, nine hundred twenty-four million, three hundred eighteen thousand, seven hundred eighty-five".