80786511 has 32 divisors (see below), whose sum is σ = 134507520. Its totient is φ = 47548512.

The previous prime is 80786507. The next prime is 80786513. The reversal of 80786511 is 11568708.

It is not a de Polignac number, because 80786511 - 2² = 80786507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80786513) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3070 + ... + 13076.

It is an arithmetic number, because the mean of its divisors is an integer number (4203360).

Almost surely, 2^80786511 is an apocalyptic number.

80786511 is a deficient number, since it is larger than the sum of its proper divisors (53721009).

80786511 is a wasteful number, since it uses less digits than its factorization.

80786511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10052 (or 10046 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 80786511 is about 8988.1316746029. The cubic root of 80786511 is about 432.2944077262.

The spelling of 80786511 in words is "eighty million, seven hundred eighty-six thousand, five hundred eleven".