80537816 has 16 divisors (see below), whose sum is σ = 151305000. Its totient is φ = 40189824.

The previous prime is 80537803. The next prime is 80537833. The reversal of 80537816 is 61873508.

It is a self number, because there is not a number n which added to its sum of digits gives 80537816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5441 + ... + 13808.

Almost surely, 2^80537816 is an apocalyptic number.

It is an amenable number.

80537816 is a deficient number, since it is larger than the sum of its proper divisors (70767184).

80537816 is a wasteful number, since it uses less digits than its factorization.

80537816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19778 (or 19774 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 80537816 is about 8974.2863783144. The cubic root of 80537816 is about 431.8503568350.

The spelling of 80537816 in words is "eighty million, five hundred thirty-seven thousand, eight hundred sixteen".