268578890872 has 16 divisors (see below), whose sum is σ = 508041930240. Its totient is φ = 133101042816.

The previous prime is 268578890861. The next prime is 268578890873. The reversal of 268578890872 is 278098875862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268578890873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148549368 + ... + 148551175.

It is an arithmetic number, because the mean of its divisors is an integer number (31752620640).

Almost surely, 2^268578890872 is an apocalyptic number.

It is an amenable number.

268578890872 is a deficient number, since it is larger than the sum of its proper divisors (239463039368).

268578890872 is a wasteful number, since it uses less digits than its factorization.

268578890872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297100662 (or 297100658 counting only the distinct ones).

The product of its (nonzero) digits is 216760320, while the sum is 70.

The spelling of 268578890872 in words is "two hundred sixty-eight billion, five hundred seventy-eight million, eight hundred ninety thousand, eight hundred seventy-two".