816980504800 has 72 divisors (see below), whose sum is σ = 2028258073800. Its totient is φ = 321253332480.

The previous prime is 816980504773. The next prime is 816980504827. The reversal of 816980504800 is 8405089618.

It is an interprime number because it is at equal distance from previous prime (816980504773) and next prime (816980504827).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8607255 + ... + 8701654.

It is an arithmetic number, because the mean of its divisors is an integer number (28170251025).

Almost surely, 2^816980504800 is an apocalyptic number.

816980504800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

816980504800 is an abundant number, since it is smaller than the sum of its proper divisors (1211277569000).

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

816980504800 is a wasteful number, since it uses less digits than its factorization.

816980504800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17308988 (or 17308975 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 816980504800 in words is "eight hundred sixteen billion, nine hundred eighty million, five hundred four thousand, eight hundred".