80731819361 has 8 divisors (see below), whose sum is σ = 81396065280. Its totient is φ = 80068660128.

The previous prime is 80731819351. The next prime is 80731819373. The reversal of 80731819361 is 16391813708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80731819361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80731819351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122141 + ... + 419978.

It is an arithmetic number, because the mean of its divisors is an integer number (10174508160).

Almost surely, 2^80731819361 is an apocalyptic number.

It is an amenable number.

80731819361 is a deficient number, since it is larger than the sum of its proper divisors (664245919).

80731819361 is a wasteful number, since it uses less digits than its factorization.

80731819361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543343.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 80731819361 in words is "eighty billion, seven hundred thirty-one million, eight hundred nineteen thousand, three hundred sixty-one".