816160816000 has 64 divisors (see below), whose sum is σ = 2029179868560. Its totient is φ = 326464320000.

The previous prime is 816160815989. The next prime is 816160816001. The reversal of 816160816000 is 618061618.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×816160816000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816160816001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25489026 + ... + 25521025.

Almost surely, 2^816160816000 is an apocalyptic number.

816160816000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

816160816000 is an abundant number, since it is smaller than the sum of its proper divisors (1213019052560).

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

816160816000 is an equidigital number, since it uses as much as digits as its factorization.

816160816000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51010080 (or 51010058 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

Adding to 816160816000 its reverse (618061618), we get a palindrome (816778877618).

The spelling of 816160816000 in words is "eight hundred sixteen billion, one hundred sixty million, eight hundred sixteen thousand".