16855800353253 has 12 divisors (see below), whose sum is σ = 24352943909580. Its totient is φ = 11234580205056.

The previous prime is 16855800353251. The next prime is 16855800353281. The reversal of 16855800353253 is 35235300855861.

16855800353253 is a `hidden beast` number, since 1 + 6 + 8 + 5 + 58 + 0 + 0 + 3 + 532 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6838214540004 + 10017585813249 = 2614998^2 + 3165057^2 .

It is not a de Polignac number, because 16855800353253 - 2¹ = 16855800353251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16855800353253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16855800353251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218295126 + ... + 218372327.

It is an arithmetic number, because the mean of its divisors is an integer number (2029411992465).

Almost surely, 2^{16855800353253} is an apocalyptic number.

It is an amenable number.

16855800353253 is a deficient number, since it is larger than the sum of its proper divisors (7497143556327).

16855800353253 is a wasteful number, since it uses less digits than its factorization.

16855800353253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436671748 (or 436671745 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 54.

The spelling of 16855800353253 in words is "sixteen trillion, eight hundred fifty-five billion, eight hundred million, three hundred fifty-three thousand, two hundred fifty-three".