80019828081 has 24 divisors (see below), whose sum is σ = 123963203520. Its totient is φ = 49585270176.

The previous prime is 80019828073. The next prime is 80019828199. The reversal of 80019828081 is 18082891008.

It is not a de Polignac number, because 80019828081 - 2³ = 80019828073 is a prime.

It is a super-2 number, since 2×80019828081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80019828881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4405581 + ... + 4423706.

It is an arithmetic number, because the mean of its divisors is an integer number (5165133480).

Almost surely, 2^80019828081 is an apocalyptic number.

It is an amenable number.

80019828081 is a deficient number, since it is larger than the sum of its proper divisors (43943375439).

80019828081 is a wasteful number, since it uses less digits than its factorization.

80019828081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8829365 (or 8829362 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 45.

The spelling of 80019828081 in words is "eighty billion, nineteen million, eight hundred twenty-eight thousand, eighty-one".