80782320481 has 4 divisors (see below), whose sum is σ = 80782924464. Its totient is φ = 80781716500.

The previous prime is 80782320407. The next prime is 80782320497. The reversal of 80782320481 is 18402328708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 80782320481 - 2²⁹ = 80245449569 is a prime.

It is a super-2 number, since 2×80782320481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80782320181) 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, 2095 + ... + 401956.

It is an arithmetic number, because the mean of its divisors is an integer number (20195731116).

Almost surely, 2^80782320481 is an apocalyptic number.

It is an amenable number.

80782320481 is a deficient number, since it is larger than the sum of its proper divisors (603983).

80782320481 is a wasteful number, since it uses less digits than its factorization.

80782320481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603982.

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 80782320481 in words is "eighty billion, seven hundred eighty-two million, three hundred twenty thousand, four hundred eighty-one".