80435685081717 has 56 divisors (see below), whose sum is σ = 141551742304256. Its totient is φ = 44720998550496.

The previous prime is 80435685081709. The next prime is 80435685081751. The reversal of 80435685081717 is 71718058653408.

80435685081717 is a `hidden beast` number, since 8 + 0 + 4 + 3 + 56 + 8 + 508 + 1 + 71 + 7 = 666.

It is not a de Polignac number, because 80435685081717 - 2³ = 80435685081709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80435685081617) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 212817013 + ... + 213194634.

Almost surely, 2^{80435685081717} is an apocalyptic number.

It is an amenable number.

80435685081717 is a deficient number, since it is larger than the sum of its proper divisors (61116057222539).

80435685081717 is an equidigital number, since it uses as much as digits as its factorization.

80435685081717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426011709 (or 426011694 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 80435685081717 in words is "eighty trillion, four hundred thirty-five billion, six hundred eighty-five million, eighty-one thousand, seven hundred seventeen".