16656871392 has 288 divisors, whose sum is σ = 56126214144. Its totient is φ = 4585420800.

The previous prime is 16656871249. The next prime is 16656871397. The reversal of 16656871392 is 29317865661.

16656871392 is a `hidden beast` number, since 1 + 6 + 6 + 568 + 71 + 3 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16656871397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19435828 + ... + 19436684.

It is an arithmetic number, because the mean of its divisors is an integer number (194882688).

Almost surely, 2^16656871392 is an apocalyptic number.

16656871392 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 16656871392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28063107072).

16656871392 is an abundant number, since it is smaller than the sum of its proper divisors (39469342752).

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

16656871392 is a wasteful number, since it uses less digits than its factorization.

16656871392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1211 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 16656871392 in words is "sixteen billion, six hundred fifty-six million, eight hundred seventy-one thousand, three hundred ninety-two".