16645376163312 has 480 divisors, whose sum is σ = 54828085777920. Its totient is φ = 4846375203840.

The previous prime is 16645376163263. The next prime is 16645376163337. The reversal of 16645376163312 is 21336167354661.

16645376163312 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 5 + 3 + 7 + 616 + 3 + 3 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 851808262 + ... + 851827802.

It is an arithmetic number, because the mean of its divisors is an integer number (114225178704).

Almost surely, 2^{16645376163312} is an apocalyptic number.

16645376163312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16645376163312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27414042888960).

16645376163312 is an abundant number, since it is smaller than the sum of its proper divisors (38182709614608).

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

16645376163312 is a wasteful number, since it uses less digits than its factorization.

16645376163312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20483 (or 20465 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 54.

The spelling of 16645376163312 in words is "sixteen trillion, six hundred forty-five billion, three hundred seventy-six million, one hundred sixty-three thousand, three hundred twelve".