16916768521380 has 216 divisors, whose sum is σ = 63502947248832. Its totient is φ = 3569252214528.

The previous prime is 16916768521379. The next prime is 16916768521391. The reversal of 16916768521380 is 8312586761961.

16916768521380 is a `hidden beast` number, since 1 + 6 + 9 + 1 + 6 + 76 + 8 + 521 + 38 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 39508974 + ... + 39934853.

It is an arithmetic number, because the mean of its divisors is an integer number (293995126152).

Almost surely, 2^{16916768521380} is an apocalyptic number.

16916768521380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16916768521380 is an abundant number, since it is smaller than the sum of its proper divisors (46586178727452).

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

16916768521380 is a wasteful number, since it uses less digits than its factorization.

16916768521380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79443875 (or 79443857 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 16916768521380 in words is "sixteen trillion, nine hundred sixteen billion, seven hundred sixty-eight million, five hundred twenty-one thousand, three hundred eighty".