80712940277 has 8 divisors (see below), whose sum is σ = 81575686296. Its totient is φ = 79854607872.

The previous prime is 80712940261. The next prime is 80712940309. The reversal of 80712940277 is 77204921708.

It can be written as a sum of positive squares in 4 ways, for example, as 219306481 + 80493633796 = 14809^2 + 283714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80712940277 - 2⁴ = 80712940261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80712940207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066628 + ... + 1139789.

It is an arithmetic number, because the mean of its divisors is an integer number (10196960787).

Almost surely, 2^80712940277 is an apocalyptic number.

It is an amenable number.

80712940277 is a deficient number, since it is larger than the sum of its proper divisors (862746019).

80712940277 is a wasteful number, since it uses less digits than its factorization.

80712940277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206807.

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 80712940277 in words is "eighty billion, seven hundred twelve million, nine hundred forty thousand, two hundred seventy-seven".