816000000080 has 40 divisors (see below), whose sum is σ = 1897400415744. Its totient is φ = 326365520000.

The previous prime is 816000000031. The next prime is 816000000121. The reversal of 816000000080 is 80000000618.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 815999999992 and 816000000055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230105 + ... + 1298055.

Almost surely, 2^816000000080 is an apocalyptic number.

816000000080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

816000000080 is an abundant number, since it is smaller than the sum of its proper divisors (1081400415664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816000000080 is a wasteful number, since it uses less digits than its factorization.

816000000080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077515 (or 1077509 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 816000000080 its reverse (80000000618), we get a palindrome (896000000698).

The spelling of 816000000080 in words is "eight hundred sixteen billion, eighty", and thus it is an aban number.