80687688531071 has 2 divisors, whose sum is σ = 80687688531072. Its totient is φ = 80687688531070.

The previous prime is 80687688531061. The next prime is 80687688531097. The reversal of 80687688531071 is 17013588678608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80687688531071 - 2³⁴ = 80670508661887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80687688530992 and 80687688531010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80687688531001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40343844265535 + 40343844265536.

It is an arithmetic number, because the mean of its divisors is an integer number (40343844265536).

Almost surely, 2^{80687688531071} is an apocalyptic number.

80687688531071 is a deficient number, since it is larger than the sum of its proper divisors (1).

80687688531071 is an equidigital number, since it uses as much as digits as its factorization.

80687688531071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108380160, while the sum is 68.

The spelling of 80687688531071 in words is "eighty trillion, six hundred eighty-seven billion, six hundred eighty-eight million, five hundred thirty-one thousand, seventy-one".