268242366553 has 16 divisors (see below), whose sum is σ = 315444602880. Its totient is φ = 223320350736.

The previous prime is 268242366527. The next prime is 268242366583. The reversal of 268242366553 is 355663242862.

It is a de Polignac number, because none of the positive numbers 2^k-268242366553 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 268242366553.

It is not an unprimeable number, because it can be changed into a prime (268242366583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2435425 + ... + 2543182.

It is an arithmetic number, because the mean of its divisors is an integer number (19715287680).

Almost surely, 2^268242366553 is an apocalyptic number.

It is an amenable number.

268242366553 is a deficient number, since it is larger than the sum of its proper divisors (47202236327).

268242366553 is a wasteful number, since it uses less digits than its factorization.

268242366553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978836.

The product of its digits is 12441600, while the sum is 52.

The spelling of 268242366553 in words is "two hundred sixty-eight billion, two hundred forty-two million, three hundred sixty-six thousand, five hundred fifty-three".