268649063423 has 4 divisors (see below), whose sum is σ = 289314376008. Its totient is φ = 247983750840.

The previous prime is 268649063399. The next prime is 268649063437. The reversal of 268649063423 is 324360946862.

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 268649063423 - 2¹⁸ = 268648801279 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 (268649063483) 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, 10332656273 + ... + 10332656298.

It is an arithmetic number, because the mean of its divisors is an integer number (72328594002).

Almost surely, 2^268649063423 is an apocalyptic number.

268649063423 is a deficient number, since it is larger than the sum of its proper divisors (20665312585).

268649063423 is a wasteful number, since it uses less digits than its factorization.

268649063423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20665312584.

The product of its (nonzero) digits is 8957952, while the sum is 53.

The spelling of 268649063423 in words is "two hundred sixty-eight billion, six hundred forty-nine million, sixty-three thousand, four hundred twenty-three".