2116565204994 has 12 divisors (see below), whose sum is σ = 4585891277526. Its totient is φ = 705521734992.

The previous prime is 2116565204993. The next prime is 2116565205023. The reversal of 2116565204994 is 4994025656112.

It is a happy number.

2116565204994 is a `hidden beast` number, since 2 + 1 + 16 + 565 + 20 + 49 + 9 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1809441974025 + 307123230969 = 1345155^2 + 554187^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2116565204994.

It is not an unprimeable number, because it can be changed into a prime (2116565204993) 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, 58793477899 + ... + 58793477934.

Almost surely, 2^{2116565204994} is an apocalyptic number.

2116565204994 is an abundant number, since it is smaller than the sum of its proper divisors (2469326072532).

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

2116565204994 is a wasteful number, since it uses less digits than its factorization.

2116565204994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117586955841 (or 117586955838 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 2116565204994 in words is "two trillion, one hundred sixteen billion, five hundred sixty-five million, two hundred four thousand, nine hundred ninety-four".