80684559071 has 4 divisors (see below), whose sum is σ = 80691118872. Its totient is φ = 80677999272.

The previous prime is 80684559047. The next prime is 80684559077. The reversal of 80684559071 is 17095548608.

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

It is a cyclic number.

It is not a de Polignac number, because 80684559071 - 2³⁴ = 63504689887 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 (80684559077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3261416 + ... + 3286061.

It is an arithmetic number, because the mean of its divisors is an integer number (20172779718).

Almost surely, 2^80684559071 is an apocalyptic number.

80684559071 is a deficient number, since it is larger than the sum of its proper divisors (6559801).

80684559071 is a wasteful number, since it uses less digits than its factorization.

80684559071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6559800.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 80684559071 in words is "eighty billion, six hundred eighty-four million, five hundred fifty-nine thousand, seventy-one".