80681155 has 4 divisors (see below), whose sum is σ = 96817392. Its totient is φ = 64544920.

The previous prime is 80681137. The next prime is 80681179. The reversal of 80681155 is 55118608.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 80681155 - 2⁹ = 80680643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80681155.

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, 8068111 + ... + 8068120.

It is an arithmetic number, because the mean of its divisors is an integer number (24204348).

Almost surely, 2^80681155 is an apocalyptic number.

80681155 is a deficient number, since it is larger than the sum of its proper divisors (16136237).

80681155 is a wasteful number, since it uses less digits than its factorization.

80681155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16136236.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 80681155 is about 8982.2689227166. The cubic root of 80681155 is about 432.1064034741.

The spelling of 80681155 in words is "eighty million, six hundred eighty-one thousand, one hundred fifty-five".