80019848866 has 24 divisors (see below), whose sum is σ = 123410305620. Its totient is φ = 38913175872.

The previous prime is 80019848863. The next prime is 80019848873. The reversal of 80019848866 is 66884891008.

It can be written as a sum of positive squares in 6 ways, for example, as 60690786025 + 19329062841 = 246355^2 + 139029^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80019848866.

It is not an unprimeable number, because it can be changed into a prime (80019848863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10217040 + ... + 10224868.

Almost surely, 2^80019848866 is an apocalyptic number.

80019848866 is a deficient number, since it is larger than the sum of its proper divisors (43390456754).

80019848866 is a wasteful number, since it uses less digits than its factorization.

80019848866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11638 (or 11601 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 58.

The spelling of 80019848866 in words is "eighty billion, nineteen million, eight hundred forty-eight thousand, eight hundred sixty-six".