16874358978287 has 4 divisors (see below), whose sum is σ = 16901101227696. Its totient is φ = 16847616728880.

The previous prime is 16874358978227. The next prime is 16874358978289. The reversal of 16874358978287 is 78287985347861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16874358978287 - 2²⁴ = 16874342201071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16874358978289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13371123758 + ... + 13371125019.

It is an arithmetic number, because the mean of its divisors is an integer number (4225275306924).

Almost surely, 2^{16874358978287} is an apocalyptic number.

16874358978287 is a deficient number, since it is larger than the sum of its proper divisors (26742249409).

16874358978287 is an equidigital number, since it uses as much as digits as its factorization.

16874358978287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26742249408.

The product of its digits is 9103933440, while the sum is 83.

The spelling of 16874358978287 in words is "sixteen trillion, eight hundred seventy-four billion, three hundred fifty-eight million, nine hundred seventy-eight thousand, two hundred eighty-seven".