16656319775232 has 480 divisors, whose sum is σ = 51297073027200. Its totient is φ = 5391707701248.

The previous prime is 16656319775209. The next prime is 16656319775239. The reversal of 16656319775232 is 23257791365661.

It is a happy number.

16656319775232 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 6 + 31 + 9 + 77 + 523 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 16656319775232.

It is not an unprimeable number, because it can be changed into a prime (16656319775239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2619326869 + ... + 2619333227.

It is an arithmetic number, because the mean of its divisors is an integer number (106868902140).

Almost surely, 2^{16656319775232} is an apocalyptic number.

16656319775232 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 16656319775232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25648536513600).

16656319775232 is an abundant number, since it is smaller than the sum of its proper divisors (34640753251968).

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

16656319775232 is an frugal number, since it uses more digits than its factorization.

16656319775232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6998 (or 6970 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 63.

The spelling of 16656319775232 in words is "sixteen trillion, six hundred fifty-six billion, three hundred nineteen million, seven hundred seventy-five thousand, two hundred thirty-two".