268221537303643 has 32 divisors (see below), whose sum is σ = 345888166321152. Its totient is φ = 201926470233600.

The previous prime is 268221537303641. The next prime is 268221537303659. The reversal of 268221537303643 is 346303735122862.

It is not a de Polignac number, because 268221537303643 - 2¹ = 268221537303641 is a prime.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (268221537303641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412106346 + ... + 412756687.

It is an arithmetic number, because the mean of its divisors is an integer number (10809005197536).

Almost surely, 2^{268221537303643} is an apocalyptic number.

268221537303643 is a deficient number, since it is larger than the sum of its proper divisors (77666629017509).

268221537303643 is a wasteful number, since it uses less digits than its factorization.

268221537303643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824863195.

The product of its (nonzero) digits is 26127360, while the sum is 55.

The spelling of 268221537303643 in words is "two hundred sixty-eight trillion, two hundred twenty-one billion, five hundred thirty-seven million, three hundred three thousand, six hundred forty-three".