616853520867204 has 18 divisors (see below), whose sum is σ = 1559268622192190. Its totient is φ = 205617840289056.

The previous prime is 616853520867187. The next prime is 616853520867209. The reversal of 616853520867204 is 402768025358616.

616853520867204 is a `hidden beast` number, since 6 + 1 + 6 + 8 + 5 + 3 + 520 + 86 + 7 + 20 + 4 = 666.

616853520867204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 495009012444804 + 121844508422400 = 22248798^2 + 11038320^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (616853520867209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8567410012009 + ... + 8567410012080.

Almost surely, 2^{616853520867204} is an apocalyptic number.

It is an amenable number.

616853520867204 is an abundant number, since it is smaller than the sum of its proper divisors (942415101324986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616853520867204 is a wasteful number, since it uses less digits than its factorization.

616853520867204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17134820024099 (or 17134820024094 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 63.

The spelling of 616853520867204 in words is "six hundred sixteen trillion, eight hundred fifty-three billion, five hundred twenty million, eight hundred sixty-seven thousand, two hundred four".