2116683566844 has 192 divisors, whose sum is σ = 6268350799872. Its totient is φ = 539929900800.

The previous prime is 2116683566839. The next prime is 2116683566849. The reversal of 2116683566844 is 4486653866112.

It is an interprime number because it is at equal distance from previous prime (2116683566839) and next prime (2116683566849).

It is a super-2 number, since 2×2116683566844² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116683566849) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36438487 + ... + 36496529.

It is an arithmetic number, because the mean of its divisors is an integer number (32647660416).

Almost surely, 2^{2116683566844} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2116683566844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3134175399936).

2116683566844 is an abundant number, since it is smaller than the sum of its proper divisors (4151667233028).

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

2116683566844 is a wasteful number, since it uses less digits than its factorization.

2116683566844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58776 (or 58774 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 60.

The spelling of 2116683566844 in words is "two trillion, one hundred sixteen billion, six hundred eighty-three million, five hundred sixty-six thousand, eight hundred forty-four".