2116646204243 has 8 divisors (see below), whose sum is σ = 2122802138112. Its totient is φ = 2110490593416.

The previous prime is 2116646204237. The next prime is 2116646204279. The reversal of 2116646204243 is 3424026466112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2116646204243 - 2²² = 2116642009939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2116646204243.

It is not an unprimeable number, because it can be changed into a prime (2116646204213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21022046 + ... + 21122492.

It is an arithmetic number, because the mean of its divisors is an integer number (265350267264).

Almost surely, 2^{2116646204243} is an apocalyptic number.

2116646204243 is a deficient number, since it is larger than the sum of its proper divisors (6155933869).

2116646204243 is a wasteful number, since it uses less digits than its factorization.

2116646204243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161521.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 2116646204243 in words is "two trillion, one hundred sixteen billion, six hundred forty-six million, two hundred four thousand, two hundred forty-three".