268215286874803 has 4 divisors (see below), whose sum is σ = 268215326129520. Its totient is φ = 268215247620088.

The previous prime is 268215286874723. The next prime is 268215286874831. The reversal of 268215286874803 is 308478682512862.

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 268215286874803 - 2¹⁷ = 268215286743731 is a prime.

It is a super-2 number, since 2×268215286874803² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268215286814803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6412543 + ... + 24032296.

It is an arithmetic number, because the mean of its divisors is an integer number (67053831532380).

Almost surely, 2^{268215286874803} is an apocalyptic number.

268215286874803 is a deficient number, since it is larger than the sum of its proper divisors (39254717).

268215286874803 is an equidigital number, since it uses as much as digits as its factorization.

268215286874803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39254716.

The product of its (nonzero) digits is 495452160, while the sum is 70.

The spelling of 268215286874803 in words is "two hundred sixty-eight trillion, two hundred fifteen billion, two hundred eighty-six million, eight hundred seventy-four thousand, eight hundred three".