80845017850 has 12 divisors (see below), whose sum is σ = 150371733294. Its totient is φ = 32338007120.

The previous prime is 80845017839. The next prime is 80845017857. The reversal of 80845017850 is 5871054808.

It can be written as a sum of positive squares in 3 ways, for example, as 62743737169 + 18101280681 = 250487^2 + 134541^2 .

It is a super-2 number, since 2×80845017850² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80845017850.

It is not an unprimeable number, because it can be changed into a prime (80845017857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 808450129 + ... + 808450228.

Almost surely, 2^80845017850 is an apocalyptic number.

80845017850 is a deficient number, since it is larger than the sum of its proper divisors (69526715444).

80845017850 is a wasteful number, since it uses less digits than its factorization.

80845017850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616900369 (or 1616900364 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 46.

The spelling of 80845017850 in words is "eighty billion, eight hundred forty-five million, seventeen thousand, eight hundred fifty".