80171035993 has 2 divisors, whose sum is σ = 80171035994. Its totient is φ = 80171035992.

The previous prime is 80171035969. The next prime is 80171036053. The reversal of 80171035993 is 39953017108.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76368217104 + 3802818889 = 276348^2 + 61667^2 .

It is a cyclic number.

It is not a de Polignac number, because 80171035993 - 2²⁹ = 79634165081 is a prime.

It is not a weakly prime, because it can be changed into another prime (80171035943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40085517996 + 40085517997.

It is an arithmetic number, because the mean of its divisors is an integer number (40085517997).

Almost surely, 2^80171035993 is an apocalyptic number.

It is an amenable number.

80171035993 is a deficient number, since it is larger than the sum of its proper divisors (1).

80171035993 is an equidigital number, since it uses as much as digits as its factorization.

80171035993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 80171035993 in words is "eighty billion, one hundred seventy-one million, thirty-five thousand, nine hundred ninety-three".