616543051161204 has 36 divisors (see below), whose sum is σ = 1558656051780100. Its totient is φ = 205491639000960.

The previous prime is 616543051161187. The next prime is 616543051161211. The reversal of 616543051161204 is 402161150345616.

616543051161204 is a `hidden beast` number, since 6 + 1 + 6 + 5 + 4 + 3 + 0 + 511 + 6 + 120 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 505532594338704 + 111010456822500 = 22484052^2 + 10536150^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 616543051161204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 945977467 + ... + 946628994.

Almost surely, 2^{616543051161204} is an apocalyptic number.

It is an amenable number.

616543051161204 is an abundant number, since it is smaller than the sum of its proper divisors (942113000618896).

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

616543051161204 is a wasteful number, since it uses less digits than its factorization.

616543051161204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892615520 (or 1892615515 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 616543051161204 in words is "six hundred sixteen trillion, five hundred forty-three billion, fifty-one million, one hundred sixty-one thousand, two hundred four".