80843394387 has 64 divisors (see below), whose sum is σ = 129540096000. Its totient is φ = 43884529920.

The previous prime is 80843394349. The next prime is 80843394421. The reversal of 80843394387 is 78349334808.

It is not a de Polignac number, because 80843394387 - 2⁶ = 80843394323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80843395387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8047914 + ... + 8057952.

It is an arithmetic number, because the mean of its divisors is an integer number (2024064000).

Almost surely, 2^80843394387 is an apocalyptic number.

80843394387 is a deficient number, since it is larger than the sum of its proper divisors (48696701613).

80843394387 is a wasteful number, since it uses less digits than its factorization.

80843394387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10336.

The product of its (nonzero) digits is 13934592, while the sum is 57.

The spelling of 80843394387 in words is "eighty billion, eight hundred forty-three million, three hundred ninety-four thousand, three hundred eighty-seven".