268143005629 has 4 divisors (see below), whose sum is σ = 273202307676. Its totient is φ = 263083703584.

The previous prime is 268143005531. The next prime is 268143005659. The reversal of 268143005629 is 926500341862.

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 238695759225 + 29447246404 = 488565^2 + 171602^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268143005629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268143005659) 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, 2529650944 + ... + 2529651049.

It is an arithmetic number, because the mean of its divisors is an integer number (68300576919).

Almost surely, 2^268143005629 is an apocalyptic number.

It is an amenable number.

268143005629 is a deficient number, since it is larger than the sum of its proper divisors (5059302047).

268143005629 is an equidigital number, since it uses as much as digits as its factorization.

268143005629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059302046.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 268143005629 in words is "two hundred sixty-eight billion, one hundred forty-three million, five thousand, six hundred twenty-nine".