80001800017 has 4 divisors (see below), whose sum is σ = 80047753396. Its totient is φ = 79955846640.

The previous prime is 80001799963. The next prime is 80001800071. The reversal of 80001800017 is 71000810008.

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

It is an interprime number because it is at equal distance from previous prime (80001799963) and next prime (80001800071).

It can be written as a sum of positive squares in 2 ways, for example, as 24737312961 + 55264487056 = 157281^2 + 235084^2 .

It is a cyclic number.

It is not a de Polignac number, because 80001800017 - 2¹⁵ = 80001767249 is a prime.

It is a super-2 number, since 2×80001800017² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80001799964 and 80001800000.

It is not an unprimeable number, because it can be changed into a prime (80001800077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22974078 + ... + 22977559.

It is an arithmetic number, because the mean of its divisors is an integer number (20011938349).

Almost surely, 2^80001800017 is an apocalyptic number.

It is an amenable number.

80001800017 is a deficient number, since it is larger than the sum of its proper divisors (45953379).

80001800017 is a wasteful number, since it uses less digits than its factorization.

80001800017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45953378.

The product of its (nonzero) digits is 448, while the sum is 25.

Subtracting from 80001800017 its reverse (71000810008), we obtain a palindrome (9000990009).

The spelling of 80001800017 in words is "eighty billion, one million, eight hundred thousand, seventeen".