210004897985 has 8 divisors (see below), whose sum is σ = 252019948200. Its totient is φ = 167994537984.

The previous prime is 210004897939. The next prime is 210004898027. The reversal of 210004897985 is 589798400012.

It can be written as a sum of positive squares in 4 ways, for example, as 13642473601 + 196362424384 = 116801^2 + 443128^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 210004897985 - 2²⁰ = 210003849409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073282 + ... + 1253771.

It is an arithmetic number, because the mean of its divisors is an integer number (31502493525).

Almost surely, 2^210004897985 is an apocalyptic number.

It is an amenable number.

210004897985 is a deficient number, since it is larger than the sum of its proper divisors (42015050215).

210004897985 is a wasteful number, since it uses less digits than its factorization.

210004897985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345107.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 210004897985 in words is "two hundred ten billion, four million, eight hundred ninety-seven thousand, nine hundred eighty-five".