216556968241153 has 16 divisors (see below), whose sum is σ = 240731630254080. Its totient is φ = 193874937871824.

The previous prime is 216556968241129. The next prime is 216556968241219. The reversal of 216556968241153 is 351142869655612.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216556968241153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216556968241753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2985227001 + ... + 2985299542.

It is an arithmetic number, because the mean of its divisors is an integer number (15045726890880).

Almost surely, 2^{216556968241153} is an apocalyptic number.

216556968241153 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

216556968241153 is a deficient number, since it is larger than the sum of its proper divisors (24174662012927).

216556968241153 is a wasteful number, since it uses less digits than its factorization.

216556968241153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5970526668.

The product of its digits is 93312000, while the sum is 64.

The spelling of 216556968241153 in words is "two hundred sixteen trillion, five hundred fifty-six billion, nine hundred sixty-eight million, two hundred forty-one thousand, one hundred fifty-three".