2168610894047 has 4 divisors (see below), whose sum is σ = 2335427116680. Its totient is φ = 2001794671416.

The previous prime is 2168610894041. The next prime is 2168610894083. The reversal of 2168610894047 is 7404980168612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2168610894047 - 2¹⁰ = 2168610893023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2168610893983 and 2168610894001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168610894041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83408111297 + ... + 83408111322.

It is an arithmetic number, because the mean of its divisors is an integer number (583856779170).

Almost surely, 2^{2168610894047} is an apocalyptic number.

2168610894047 is a deficient number, since it is larger than the sum of its proper divisors (166816222633).

2168610894047 is a wasteful number, since it uses less digits than its factorization.

2168610894047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166816222632.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 2168610894047 in words is "two trillion, one hundred sixty-eight billion, six hundred ten million, eight hundred ninety-four thousand, forty-seven".