80816535 has 80 divisors (see below), whose sum is σ = 154167552. Its totient is φ = 40435200.

The previous prime is 80816509. The next prime is 80816551. The reversal of 80816535 is 53561808.

It is not a de Polignac number, because 80816535 - 2⁶ = 80816471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80816535.

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 79 ways as a sum of consecutive naturals, for example, 514677 + ... + 514833.

Almost surely, 2^80816535 is an apocalyptic number.

80816535 is a deficient number, since it is larger than the sum of its proper divisors (73351017).

80816535 is a wasteful number, since it uses less digits than its factorization.

80816535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 80816535 is about 8989.8017219514. The cubic root of 80816535 is about 432.3479546182.

The spelling of 80816535 in words is "eighty million, eight hundred sixteen thousand, five hundred thirty-five".