268456380193 has 4 divisors (see below), whose sum is σ = 268461825300. Its totient is φ = 268450935088.

The previous prime is 268456380163. The next prime is 268456380221. The reversal of 268456380193 is 391083654862.

268456380193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41254484544 + 227201895649 = 203112^2 + 476657^2 .

It is a cyclic number.

It is not a de Polignac number, because 268456380193 - 2¹³ = 268456372001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268456380163) 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 3 ways as a sum of consecutive naturals, for example, 2647918 + ... + 2747431.

It is an arithmetic number, because the mean of its divisors is an integer number (67115456325).

Almost surely, 2^268456380193 is an apocalyptic number.

It is an amenable number.

268456380193 is a deficient number, since it is larger than the sum of its proper divisors (5445107).

268456380193 is an equidigital number, since it uses as much as digits as its factorization.

268456380193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445106.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 268456380193 in words is "two hundred sixty-eight billion, four hundred fifty-six million, three hundred eighty thousand, one hundred ninety-three".