210684993693 has 8 divisors (see below), whose sum is σ = 280980594048. Its totient is φ = 140423027904.

The previous prime is 210684993679. The next prime is 210684993713. The reversal of 210684993693 is 396399486012.

210684993693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210684993693 - 2⁴ = 210684993677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210684995693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8394021 + ... + 8419082.

It is an arithmetic number, because the mean of its divisors is an integer number (35122574256).

Almost surely, 2^210684993693 is an apocalyptic number.

It is an amenable number.

210684993693 is a deficient number, since it is larger than the sum of its proper divisors (70295600355).

210684993693 is a wasteful number, since it uses less digits than its factorization.

210684993693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16817283.

The product of its (nonzero) digits is 15116544, while the sum is 60.

The spelling of 210684993693 in words is "two hundred ten billion, six hundred eighty-four million, nine hundred ninety-three thousand, six hundred ninety-three".