16691948913276 has 288 divisors, whose sum is σ = 52076348513280. Its totient is φ = 4389924169728.

The previous prime is 16691948913251. The next prime is 16691948913287. The reversal of 16691948913276 is 67231984919661.

It is a happy number.

16691948913276 is a `hidden beast` number, since 1 + 6 + 6 + 9 + 1 + 9 + 489 + 132 + 7 + 6 = 666.

It is a super-3 number, since 3×16691948913276³ (a number of 41 digits) contains 333 as substring.

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, 2453612491 + ... + 2453619293.

It is an arithmetic number, because the mean of its divisors is an integer number (180820654560).

Almost surely, 2^{16691948913276} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16691948913276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26038174256640).

16691948913276 is an abundant number, since it is smaller than the sum of its proper divisors (35384399600004).

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

16691948913276 is a wasteful number, since it uses less digits than its factorization.

16691948913276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8825 (or 8820 counting only the distinct ones).

The product of its digits is 211631616, while the sum is 72.

The spelling of 16691948913276 in words is "sixteen trillion, six hundred ninety-one billion, nine hundred forty-eight million, nine hundred thirteen thousand, two hundred seventy-six".