16691322964680 has 1024 divisors, whose sum is σ = 69220782489600. Its totient is φ = 3483648000000.

The previous prime is 16691322964639. The next prime is 16691322964681. The reversal of 16691322964680 is 8646922319661.

16691322964680 is a `hidden beast` number, since 1 + 6 + 69 + 1 + 3 + 22 + 96 + 468 + 0 = 666.

It is a super-2 number, since 2×16691322964680² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (16691322964681) by changing a digit.

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 255 ways as a sum of consecutive naturals, for example, 3724908040 + ... + 3724912520.

It is an arithmetic number, because the mean of its divisors is an integer number (67598420400).

Almost surely, 2^{16691322964680} is an apocalyptic number.

16691322964680 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 16691322964680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34610391244800).

16691322964680 is an abundant number, since it is smaller than the sum of its proper divisors (52529459524920).

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

16691322964680 is a wasteful number, since it uses less digits than its factorization.

16691322964680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923 (or 4913 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 16691322964680 in words is "sixteen trillion, six hundred ninety-one billion, three hundred twenty-two million, nine hundred sixty-four thousand, six hundred eighty".