80682756861 has 8 divisors (see below), whose sum is σ = 122945153344. Its totient is φ = 46104432480.

The previous prime is 80682756793. The next prime is 80682756953. The reversal of 80682756861 is 16865728608.

It is a happy number.

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

It is not a de Polignac number, because 80682756861 - 2¹⁵ = 80682724093 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 (80682756361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1921018000 + ... + 1921018041.

It is an arithmetic number, because the mean of its divisors is an integer number (15368144168).

Almost surely, 2^80682756861 is an apocalyptic number.

It is an amenable number.

80682756861 is a deficient number, since it is larger than the sum of its proper divisors (42262396483).

80682756861 is a wasteful number, since it uses less digits than its factorization.

80682756861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842036051.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 80682756861 in words is "eighty billion, six hundred eighty-two million, seven hundred fifty-six thousand, eight hundred sixty-one".