16641978716160 has 4368 divisors, whose sum is σ = 79156749340800. Its totient is φ = 3274740596736.

The previous prime is 16641978716137. The next prime is 16641978716173. The reversal of 16641978716160 is 6161787914661.

16641978716160 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 1 + 9 + 7 + 8 + 7 + 1 + 616 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 573861335026 + ... + 573861335054.

Almost surely, 2^{16641978716160} is an apocalyptic number.

16641978716160 is a gapful number since it is divisible by the number (10) 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 16641978716160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39578374670400).

16641978716160 is an abundant number, since it is smaller than the sum of its proper divisors (62514770624640).

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

16641978716160 is an equidigital number, since it uses as much as digits as its factorization.

16641978716160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 16641978716160 in words is "sixteen trillion, six hundred forty-one billion, nine hundred seventy-eight million, seven hundred sixteen thousand, one hundred sixty".