16853668686835 has 4 divisors (see below), whose sum is σ = 20224402424208. Its totient is φ = 13482934949464.

The previous prime is 16853668686791. The next prime is 16853668686847. The reversal of 16853668686835 is 53868686635861.

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 16853668686835 - 2⁷ = 16853668686707 is a prime.

It is a super-2 number, since 2×16853668686835² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685366868679 + ... + 1685366868688.

It is an arithmetic number, because the mean of its divisors is an integer number (5056100606052).

Almost surely, 2^{16853668686835} is an apocalyptic number.

16853668686835 is a deficient number, since it is larger than the sum of its proper divisors (3370733737373).

16853668686835 is an equidigital number, since it uses as much as digits as its factorization.

16853668686835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370733737372.

The product of its digits is 7166361600, while the sum is 79.

The spelling of 16853668686835 in words is "sixteen trillion, eight hundred fifty-three billion, six hundred sixty-eight million, six hundred eighty-six thousand, eight hundred thirty-five".