80136771 has 16 divisors (see below), whose sum is σ = 125529600. Its totient is φ = 44831520.

The previous prime is 80136769. The next prime is 80136779. The reversal of 80136771 is 17763108.

It is not a de Polignac number, because 80136771 - 2¹ = 80136769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (80136779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92971 + ... + 93828.

It is an arithmetic number, because the mean of its divisors is an integer number (7845600).

Almost surely, 2^80136771 is an apocalyptic number.

80136771 is a deficient number, since it is larger than the sum of its proper divisors (45392829).

80136771 is a wasteful number, since it uses less digits than its factorization.

80136771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186826.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 80136771 is about 8951.9143762661. The cubic root of 80136771 is about 431.1323516925.

Adding to 80136771 its reverse (17763108), we get a palindrome (97899879).

The spelling of 80136771 in words is "eighty million, one hundred thirty-six thousand, seven hundred seventy-one".